Chemistry Middle School

A science class performed an investigation to model heat absorption with sand and water. The class put a beaker of sand and beaker of water under a heat lamp. The data to the left were the results after 10 minutes of heating. Using the information in the data table to the left, is the data the class collected valid?

A Science Class Performed An Investigation To Model Heat Absorption With Sand And Water. The Class Put

Answers

Answer 1

Answer:

mkhcxfjvuh jb

Explanation:

 ,bnb kj

hope this helps

Related Questions

Define the following terms

Uniformitarianism

&

trace fossil

Answers

Answer:

Uniformitarianism- A theory that geologic process that occur today are similar to those that have occurred in the past

Trace Fossil- A fossil of a foot or trail or other travel of an animal rather than of the animal itself

Uniformitarianism: the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.

Trace fossil: a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself

What happens to salt water and fresh water when you try to mix them.

Answers

Answer:

the lighter fresh water rises up and over the salt water

Explanation:

this is because the salt water is denser

Answer:

When trying to mix fresh/salt water it leads to variable and dynamic chemical conditions, especially salinity because fresh water flowing into the estuary is less salty and less dense than water from the ocean, it often floats on top of the heavier seawater.

Explanation:

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some students observe four different lab investigations. The students record their observations in a table.
Investigation
Observations
1
A beaker of water is
heated on a hot plate. Bubbles form in
the water, and steam is given off.
2
Oil is added to a beaker of water. Oil forms a layer on top
of the water
3
Sand and iron filings are mixed in a beaker. A magnet is
then used to separate the iron filings from the sand.
4
A piece of chalk is placed in a beaker of vinegar Bubbles
form as a gas is given off.
Which investigation most likely involved a chemical reaction?

Answers

Answer:

Number 4 is an example of a chemical reaction

Explanation:

heThe chalk is reacting with the vingear which is creating a new substance. The new substance is the gas that the reaction gives off.

I think the number 4 is the right answer

HURRY PLEASE

What forces act upon a maglev train? Select the THREE (3) that apply.

air resistance
air resistance

friction with the ground/track
friction with the ground/track

magnetic fields that attract and repel
magnetic fields that attract and repel

gravity
gravity

applied forces from other vehicles

Answers

magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train. a maglev train is a train that is propelled by magnets on both the train and the tracks. gravity plus friction plus magnetic fields equals a maglev train.

Magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train.

What is maglev train?

A maglev train is a train that is propelled by the effect of magnets on both the train and the tracks.

Force that act upon maglev trainGravityFriction Magnetic fields

Thus, we can conclude that, magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train.

Learn more about maglev train here: https://brainly.com/question/16196328

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what will happen? (Newton's 1st Law Egg Drop)

Answers

Answer:

dogwater

Explanation:

lalidadida

the egg sitting on the tube should stay that way unless its pushed or pulled

Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1.

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Answer: as you add the base it added some  PH. The Ph lever of white vinager is2.4 - 3.4

PLS HELP ME IT IS SUPPOSED TO BE DONE IN 10 MINS PLS In a two paragraph (it can be a 2 sentence paragraph) extended response, summarize the ways in which technological advances and enforcement of safety and environmental laws and regulations are attempting to avoid or reduce the negative effects of finding, producing, and transporting oil.

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Answer:

Environment: They must be supplied and used in ways that have minimal safety and environmental stewardship have advanced safety regulations and practices, promulgated rules for reducing VOC emissions from oil and gas production and ... disposal protocols are similarly reducing negative impacts to air and water.

Explanation:

O 9 ? A B с The models above show particle arrangement. The following statements compare and contrast the models. 1. The substance in diagram A has the highest density. 2. The substance in diagram A has the highest energy. 3. The substances in diagrams B and C would flow freely. 4. The substance in diagram C has the lowest temperature. 5. The substances must undergo a chemical change to transform into a different model.​

Answers

Answer: 2 The substance in diagram A has the highest energy

Explanation:

Answer:

On my test, I have to choose which of the 5 statements are correct. 1 and 3 are definitely correct. 5 is NOT correct as this is matter we are talking about. When matter changes that is a physical change and NOT a chemical change.

1 & 3 are your answers

What type of worm has a circulatory system?
Nematodes
Segmented worms
Roundworms
Flatworms

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Your answer will be Segmented worms. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels.

Predict whether an ionic compound will dissolve in a nonpolar solvent.

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i predict that the cation will dissolve

Explain how you could use the solubility of a substance to make a saturated solution.

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A saturated solution is prepared by continuously adding solute to the solution until a stage is reached where the solute appears as a solid precipitate or as crystals to form a highly saturated solution. Consider the process of adding table sugar to a container of water.

√225/√25 = ?? hurry please I'm stuck on it​

Answers

Answer:

√225/√25 =3

The answer is 3

Explanation:

Answer:

The answer is 3

Explanation:

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