Your teacher lights a small candle and allows it to burn. At first, the candle wax melts, but then it seems to burn away and disappear. The candle also gives off smoke, heat, and light. Is this a physical or a chemical change? Explain.
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Related Questions
It is lab investigations day! What clothes should you wear to school?
flip-flops or open toed shoes
a shirt with short sleeves that fits close to your skin
baggy shirt and pants
lots of dangling jewelry
please help me
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I donty know how to do this what are they
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Answer:spectrum
Explanation:
Let's start with the basics. The electromagnetic spectrum is a range of different types of electromagnetic waves. These waves have different wavelengths and frequencies, and they include things like radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. But here's the thing: not all of these waves are visible to the human eye.
So, which ones are visible? You guessed it – it's the visible light that we're interested in. Visible light is the part of the electromagnetic spectrum that we can see. It's made up of different colors, including red, orange, yellow, green, blue, indigo, and violet. When all of these colors are combined, they make white light.
But what about the other types of electromagnetic waves? Well, they are not visible to the human eye. For example, radio waves are used to transmit radio and television signals, but we can't see them. Microwaves are used for cooking food, but we can't see them either. Infrared radiation is what we feel as heat, but it's also not visible to us. Ultraviolet radiation can cause sunburn, but we can't see it either. X-rays and gamma rays are used in medical imaging and radiation therapy, but we can't see them with our eyes.
So, in summary, visible light is the only part of the electromagnetic spectrum that we can see with our eyes. All of the other types of electromagnetic waves, including radio waves, microwaves, infrared radiation, ultraviolet radiation, X-rays, and gamma rays, are not visible to the human eye. Isn't that amazing?
Radio
Micro
Infrared
Visible light
Ultra violet
X-ray
Gamma
(I remember them using the mnemonic “Read My Instructions Visible Under X-ray Glasses” (first letter of each word represents an EM wave))
Only Visible light waves are visible to the human eye
What type of energy is associated with this movement of the molecules?
Answers
Answer:
electric
Explanation:
or heat energy
( same thing)
is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster.
What are the 3 most important ecosystem services of a coral reef
1: Home to housands of species of fish, plants, and turtles
2: Corals provide treatments to human illnesses.
3: Reduces wave energy and helps protect against tsunamis
4: Heats up the planet.
5: Provides a good source of tacos.
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2. Corals provide treatments to human illnesses
3. Reduces wave energy and helps protect against tsunamis
The other two answers aren’t true and don’t make sense
Please help, I don't get what does this means
3. Name the compound sodium makes with the following elements.
(a) Calcium carbonate:
Answers
Answer: hydrogen-carbonate.
Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.
I hope everyone finds this helpful
What causes all landforms to take shape and develop?
A. Wind, water, and ice cause the surface of Earth to change and the result is landforms.
B. Wind, water, and human activity cause the surface of Earth to change and the result is landforms.
C. Only wind causes the surface of Earth to change and make landforms.
D. Ice expanding on the surface of Earth cause landforms to develop.
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Answer:
A
Explanation:
Where should you place the label on a line graph for the independent variable?
As usual, any non-answers will be reported. Thank you!
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The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line).
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PLS HELP I'LL GIVE 50 POINTS+ BRAINLIEST TO THE FIRST PERSON WHO WRITES ME AN ESSAY
Part 3: Writing to the People of Westfield
Dr. Yung wants you to explain what the reddish-brown substance is to the people of Westfield. As you write your argument, remember to:
state your claim about the identity of the reddish-brown substance.
use evidence from both your observations and the atomic-scale models to support your claim.
include the vocabulary words listed below in your argument.
Chapter 1 Question: What is the reddish-brown substance in the water?
Claim 1: The reddish-brown substance is the same as the substance that makes up the pipes.
Claim 2: The reddish-brown substance is the same substance as the fertilizer.
Claim 3: The reddish-brown substance is not the same as either the fertilizer or the substance that makes up the pipes.
Word bank: atom, model, property, substance
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Answer:
Dear People of Westfield,
As you may be aware, there has been a lot of concern about the reddish-brown substance found in the water supply. After conducting extensive research and analysis, I am here to share my findings with you.
Based on my observations and the atomic-scale models, I can confidently state that the reddish-brown substance is not the same as either the fertilizer or the substance that makes up the pipes. In fact, the reddish-brown substance has its own unique set of properties that distinguish it from these other substances.
One of the key pieces of evidence supporting this claim is the atomic-scale model of the reddish-brown substance. This model shows that the substance is made up of its own distinct atoms arranged in a specific way. These atoms have unique properties, such as their size and charge, that differentiate them from the atoms that make up the fertilizer and the pipes.
Furthermore, my observations of the reddish-brown substance also support this claim. I have noticed that the substance behaves differently than both the fertilizer and the pipe material. For example, the substance dissolves at a different rate and reacts differently to various chemicals.
In conclusion, it is clear that the reddish-brown substance in the water supply is its own unique substance, with its own distinct properties and atomic makeup. It is not the same as either the fertilizer or the substance that makes up the pipes. I hope that this explanation provides some clarity and reassurance to the people of Westfield.
Explanation:
give me brainliest
I am writing to address the recent concerns about the reddish-brown substance found in your water. After careful observation and analysis, I have come to the conclusion that the reddish-brown substance is not the same as either the fertilizer or the substance that makes up the pipes.
My claim is based on the evidence from both my observations and the atomic-scale models. The atomic-scale models show that every substance is made up of atoms that have unique properties. These properties determine the characteristics of the substance. After analyzing the reddish-brown substance, I found that its properties are different from both the fertilizer and the substance that makes up the pipes.
Furthermore, the reddish-brown substance has a unique set of properties that are not found in either the fertilizer or the substance that makes up the pipes. These properties include its reddish-brown color, its texture, and its chemical composition. These properties are consistent with a different substance that is not related to either the fertilizer or the substance that makes up the pipes.
In conclusion, I believe that the reddish-brown substance is not the same as either the fertilizer or the substance that makes up the pipes. My claim is based on the evidence from both my observations and the atomic-scale models. The properties of the reddish-brown substance are unique and do not match those of either the fertilizer or the substance that makes up the pipes.
Thank you for your attention to this matter.
Sincerely,
[Your Name]
What landscape feature contributes to the dryness of deserts?
A. The open, flat areas of a desert prevent clouds from forming.
B. Desert canyons collect all water and funnel it out of the desert.
C. Desert lakes absorb all the water.
D. Mountains block the winds that bring rain clouds.
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Answer:
As I'm Not % Sure I Can Say C & D don't seem Right, Leaving A & B Having Me to Think the Answer is A (Hope I'm Right Good-Luck)
Explanation:
Answer: Mountains block the winds that bring rain clouds.
Explanation: By acting as obstacles to the flow of air masses, mountains contribute significantly to the dryness of deserts. Orographic lifting is a process that occurs when moist air is forced to ascend as it approaches a mountain range. The moisture in the air condenses and forms clouds as the air cools as it climbs. As a result, on the windward side of the mountains, the air loses a lot of its moisture as precipitation. The air has already lost a significant amount of moisture by the time it reaches the leeward side of the mountains, creating a rain shadow effect. On the leeward side of the mountains, this impact results in a dryer area that is often a desert. Consequently, the existence of mountains influences
When does a solar Eclipse happen, and how?
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Answer:
Solar Eclipse happens when the moon gets between the sun and the earth, the moon gets all the light and blocks the earth from getting sunlight.
Hope this helps ;) ❤❤❤
When engaging in scientific experimentation, what information is needed for us to successfully develop a scientific argument?
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Answer:
Argumentation is a process for reaching agreements about explanations and design solutions. In science, reasoning and argument based on evidence are essential in identifying the best explanation for a natural phenomenon. In engineering, reasoning and argument are needed to identify the best solution to a design problem.
Explanation:
I'm not sure if that helps, sorry!
Answer: evidence/proof
Explanation:I’m always right
What do cuticles do for land plants that were not necessary for ancestors that lived in the water?
Cuticles allow them to grow bigger and taller.
Cuticles help them transport water.
Cuticles help prevent water loss.
Cuticles allow the performance of photosynthesis.
HELP PLS AND THX
Answers
Answer:prevention of water loss would be unnecessary
Explanation:
edge 2021
Cuticles are protective lining in the epidermal layer of plants. Cuticles helps to reduce water loss and protect the plants from environmental stresses.
What is cuticles?Cuticle is an organism's external layer or area that makes touch with the environment. The epidermis secretes the dead, noncellular cuticle in many invertebrate species. In humans, the cuticle is the epidermis, and this layer may include colours and chitin, similar to arthropods.
The cuticle is a protective coating that protects the epidermal cells of leaves and other organs while preventing water loss in some higher plants.
It is made up of cutin, a waxy, water-repellent compound related to suberin that is present in the corky tissue's cell walls. Hence, option c is correct.
Find more on cuticles:
https://brainly.com/question/28578072
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what are all the non-metals element names? and what are there properties?
what are all the metalloids element names? and what are there properties?
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Answer:
go to a pic of the periodic table and it's over th e stairs with is the metelliods and its 2 up then all the non metal on the right side above the mettoliods
In modern periodic table there are 22 non-metals in which there are 11 gases, 1 liquid and 10 solid. Bromine occurs in the state of liquid and hydrogen, nitrogen, oxygen, chlorine etc are found in gaseous forms. But carbon, sulphur, phosphorous, iodine etc solid non-metals.
WELL I DONT KNOW IF THIS WILL HELP BUT I FOUND THIS
NO LINKS
air contains about 78% nitrogen and 21% oxygen. Based on this information, one can conclude that air?
A.is a pure substance.
B. is a mixture of at least two gases.
C. consists of different states of matter.
D. consists of components that are chemically joined.
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Help me please! you will get brainliest
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Answer: Water Waves
Explanation:
No telling secrets
Simple and complex molecules are similar in that they both involve ____ atoms A water B simple C bonded D complex
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Answer:
The answer is C.
Explanation:
Please give brainliest
Answer:
D
Explanation:
complex, in chemistry, a substance, either an ion or an electrically neutral molecule, formed by the union of simpler substances (as compounds or ions) and held together by forces that are chemical (i.e., dependent on specific properties of particular atomic structures) rather than physical.
What is a difference between how ants and elephants primarily use grouping for survival?
A. Ants use grouping for better chance of mating, and elephants use grouping for better access to food
B. Elephants use grouping for better chance of mating, and ants use grouping for better access to food.
C. Ants use grouping for cooperation, and elephants use grouping for protection of the young.
D. Elephants use grouping for cooperation, and ants use grouping for protection of the young.
Answers
Elephants use grouping for better chance of mating, and ants use grouping for better access to food. Thus option B is correct.
What is grouping for survival?Grouping for survival is defined as individuals of the same species (conspecifics) maintain spatial proximity with one another over time through social attraction mechanisms.
It can also be defined as the animals live in groups can assist each other in raising the young, hunting, keeping watch, gathering food, finding shelter, and surviving.
Furthermore, because the group increases the chances of survival for its members, group survival means personal survival. The individual benefits from supporting the group, and the group benefits from the individual's support. Such cooperative strategies increase the group's ability to gather the resources required for survival.
Our findings, when combined with previous research in this system, suggest that larger groups confer survival benefits by reducing predation rather than improving access to food or buffering against physiological stress.
Thus, Elephants use grouping for better chance of mating, and ants use grouping for better access to food. Thus option B is correct.
To learn more about grouping for survival, refer to the link below:
https://brainly.com/question/10408770
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a) The formula of a compound is AB. If the valency of B is 3, what will be the valency of A? b) Baking soda is a white solid and has the formula NaHCO3. How many of each type of atoms are there in it?
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Answer:
The valency of B will be 5
Baking soda contains one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms
Explanation:
Hope it will help you:)
Answer:The valency of B will be 5
Baking soda contains one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms
Explanation:
Even though the iceberg and the water that surrounds it are made up of the same substance, the iceberg is able to float. Why is this?
HELP ME PLZ!!
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Answer:
Because ice contains some air in it.
Choose the five physical tests for identifying rocks:
metamorphic
sedimentary
color
streak
hardness
luster
igneous
cleavage
Answers
1. Hardness
2. Luster
3. Color
4. Color
5. Streak
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
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c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
Explain what is happening to the particles’ movement for vaporization.
Answers
(This is by how I understand the question)
Answer:
The particles movement increases.
Explanation:
This is because as the particles change from liquid to gaseous state, they acquire more energy due to latent heat of vapourization hence increased movement.
PLEASE HELP QUARTER TWO IS ALMOST OVER AND I HAVE TO TURN THIS IN TODAY!!!
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Answer:
5. Sensory transduction is the translation of the sensory stimulus into neuronal activity. It involves a variety of physical and chemical mechanisms.
6. The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
7. The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions.
8. When a pin is poked in the finger the signals are received by the sensory neurons and it is sent to the brain via the spinal cord. The signals are processed (for removal of the hand) and sent toward the muscles by the motor neuron.
Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.
A. It may change directions.
B. It will move at a constant speed.
C. It may slow down.
D. It may slow down or speed up.
E. It will stay stationary.
Answers
Answer:b
Explanation:
What needed to be present in marine mud to form fossil fuels?
Answers
Carbon and Hydrogen.
Answer:
Mostly decaying organisms are needed to present in marine mud to form fossil fuels.
Explanation: When organisms and plants died and sank to the bottom of swamps and oceans, brown soil-like materials called peat are formed. Over millions of years, the peat became covered with sand, clay and other minerals and the peat is converted into layers of sedimentary rocks. After a long time, different type of fossil fuels are formed.
What is NOT true about genes and chromosomes?
Genese are located on chromosomes
Chromosomes are in the nucleus
A single chromosome can contain hundreds of genes
All of these are true
Answers
Let us go option by option :
1) Genes are located in chromosomes. TRUE
Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.
2) Chromosomes are the in nucleus.
TRUE
Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.
3) A single Chromosome can contain hundreds of genes.
TRUE
single Chromosome can contain hundreds of tgenes.
4) All of the above
TRUE
As all the statements above are true. The correct option is 4.
Answer:
all of them are true
Explanation:
this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true
no problem
A restaurant advertises that it is environmentally friendly. It describes the solar panels it uses to generate electricity and the locally grown produce it serves. All the meals it offers are prepared over an open wood fire. Food is served on recycled copper plates, and drinks are served in recycled aluminum cups.
Which correctly lists three renewable resources used by the restaurant?
aluminum, copper, produce
copper, produce, sunlight
produce, sunlight, wood
sunlight, wood, aluminum
Answers
Answer:
produce, sunlight, wood
The renewable resources used by the restaurant are
produce, sunlight, wood
What are renewable resources?Renewable resources are resources which can be replenished after being used up.
Renewable resources include water, sun energy, wind, trees and animals.
The environmentally friendly restaurant will use things that would not cause environmental damage.
Based on what they use, three renewable resources used by the restaurant are solar energy, locally grown produce and wood.
Learn more about renewable resources at: https://brainly.com/question/79953
Name and Title:
Include your name, instructor's name, date, and name of lab.
Objectives(s):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.
Data:
Record the elements present in each unknown astronomical object. Be sure to indicate “yes” or “no” for each element.
Hydrogen Helium Lithium Sodium Carbon Nitrogen
Moon One
Moon Two
Planet One
Planet Two
Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.
Using two to three sentences, summarize what you investigated and observed in this lab.
Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essential to use many types of equipment when studying space?
If carbon was the most common element found in the moons and planets, what element is missing that would make them similar to Earth? Explain why. (Hint: Think about the carbon cycle.)
We know that the electromagnetic spectrum uses wavelengths and frequencies to determine a lot about outer space. How does it help us find out the make-up of stars?
Why might it be useful to determine the elements that a planet or moon is made up of?
Answers
In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes are sliding toward each other and crash. The crash caused both boxes to change speed. Based on the information in the diagram, which statement is correct? In your answer, explain what the forces were like and why the boxes changed speed.
Box 1 has more mass than Box 2.
Box 1 and Box 2 are the same mass.
Box 1 has less mass than Box 2.
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Answer:
Box 1 and Box 2 are the same mass It caused both to change speed because they have both the same mass.
Explanation:
How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
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(1/12)th Mass of one C12 atom