Three solutions have the following pH values: Solution R: pH 3 Solution S: pH 7 Solution T: pH 11 Which statement correctly compares the solutions to water?

R is an acid, S is neutral, and T is a base.

R is a base, S is an acid, and T is neutral.

R is neutral, S is a base, and T is an acid.

R and T are acids, and S is neutral.

A student examines the equation: $$\\mathrm{CH}_4 + 2\\mathrm{O}_2 \\to \\mathrm{CO}_2 + 2\\mathrm{H}_2\\mathrm{O}$$ Which evidence shows that the equation demonstrates the law of conservation of mass?

The same number of each type of atom is present in the reactants and products.

There are more molecules on the product side.

Carbon, hydrogen, and oxygen are present on both sides, so the equation must be balanced.

The products contain different substances than the reactants.

A student writes the equation: $$\\mathrm{H}_2 + \\mathrm{Cl}_2 \\to 2\\mathrm{HCl}$$ The student claims the equation demonstrates conservation of mass. Which statement BEST evaluates the student's claim?

The claim is correct because there are 2 hydrogen atoms and 2 chlorine atoms on both sides.

The claim is correct because two reactant molecules always produce two product molecules.

The claim is incorrect because chlorine is a reactant.

The claim is incorrect because the product contains more atoms than the reactants.

Topic 1: Matter & Chemical Reactions

Authored by Melba Reyes

Physics

8th Grade

MS-PS1-2 covered

Used 11+ times

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

Content View
Student View

16 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student examines four samples:
• Sample 1 contains only one type of atom.
• Sample 2 contains two different elements chemically combined in a fixed ratio.
• Sample 3 contains two substances evenly distributed throughout.
• Sample 4 contains visible pieces of different substances.

Which classification correctly identifies Samples 1–4?

Element, compound, homogeneous mixture, heterogeneous mixture

Compound, element, heterogeneous mixture, homogeneous mixture

Element, homogeneous mixture, compound, heterogeneous mixture

Homogeneous mixture, compound, element, heterogeneous mixture

Tags

MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student adds salt to a beaker of water and stirs until the salt is no longer visible. A sample taken from the top of the beaker has the same composition as a sample taken from the bottom.

How should the saltwater be classified?

Element, because only one substance is visible

Compound, because the salt and water chemically combine

Homogeneous mixture, because the composition is uniform throughout

Heterogeneous mixture, because two substances were originally added

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist tests an unknown solid element. The element is brittle, has some luster, and conducts electricity better than most nonmetals but not as well as most metals.

Which classification is BEST supported by these observations?

Metal

Metalloid

Nonmetal

Compound

Tags

HS-PS1-1

MULTIPLE SELECT QUESTION

30 sec • 1 pt

A student is given an unknown element that is shiny, malleable, and conducts thermal energy well.

Which TWO observations provide the strongest evidence that the element is a metal?

It is shiny.

It is malleable.

It is an element.

It has mass.

Tags

MS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A plastic bead floats in vegetable oil but sinks when placed in rubbing alcohol.

Which statement BEST compares the densities?

The bead is less dense than both liquids.

The bead is more dense than both liquids.

The bead is less dense than vegetable oil but more dense than rubbing alcohol.

The bead has the same density as both liquids.

Tags

MS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student makes the following observations during an investigation:
Ice melts into liquid water.
A metal reacts with acid and bubbles form.
Paper is cut into smaller pieces.
Two clear liquids are mixed and a solid forms.
Which observations provide evidence of a chemical change?

1 and 2

1 and 3

2 and 4

3 and 4

Tags

MS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two clear solutions are mixed. The mixture becomes cloudy and a solid settles to the bottom of the container.

Which evidence BEST supports the conclusion that a chemical change may have occurred?

The liquids were both clear before mixing.

A precipitate formed when the solutions were mixed.

The mixture remained in the same container.

The total volume could still be measured.

Tags

MS-PS1-2

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Microsoft

or continue with

Facebook

Apple

Others

By signing up, you agree to our Terms of Service & Privacy Policy

Already have an account?

Popular Resources on Wayground

10 questions

Impact of 9/11 and the War on Terror

Interactive video

•

10th - 12th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

5 questions

9/11

Interactive video

•

9th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

10 questions

Riddles Riddles fun Riddles

Quiz

•

6th - 12th Grade

21 questions

Lab Safety

Quiz

•

10th Grade

6 questions

PRIDE in the Hallways and Bathrooms

Presentation

•

12th Grade

Discover more resources for Physics

20 questions

Calculating Net Force

Quiz

•

6th - 9th Grade

21 questions

Calculating Speed Distance and Time

Quiz

•

6th - 8th Grade

20 questions

Newtons 3rd Law and Force Pairs

Quiz

•

8th Grade

22 questions

Physical Properties of Matter

Quiz

•

8th Grade

Topic 1: Matter & Chemical Reactions

A student adds salt to a beaker of water and stirs until the salt is no longer visible. A sample taken from the top of the beaker has the same composition as a sample taken from the bottom.

How should the saltwater be classified?

A scientist tests an unknown solid element. The element is brittle, has some luster, and conducts electricity better than most nonmetals but not as well as most metals.

Which classification is BEST supported by these observations?

A student is given an unknown element that is shiny, malleable, and conducts thermal energy well.

Which TWO observations provide the strongest evidence that the element is a metal?

A plastic bead floats in vegetable oil but sinks when placed in rubbing alcohol.

Which statement BEST compares the densities?

A student makes the following observations during an investigation:
Ice melts into liquid water.
A metal reacts with acid and bubbles form.
Paper is cut into smaller pieces.
Two clear liquids are mixed and a solid forms.
Which observations provide evidence of a chemical change?

Two clear solutions are mixed. The mixture becomes cloudy and a solid settles to the bottom of the container.

Which evidence BEST supports the conclusion that a chemical change may have occurred?

Water moves upward through narrow tubes in a plant stem. Water molecules are attracted to one another and also to the walls of the tubes.

Which properties of water help explain this movement?

A student carefully places a small paper clip on the surface of water, and the paper clip remains on the surface.

Which property of water BEST explains this observation?

Three solutions have the following pH values:

Solution R: pH 3
Solution S: pH 7
Solution T: pH 11

Which statement correctly compares the solutions to water?

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Physics

Topic 1: Matter & Chemical Reactions

A student adds salt to a beaker of water and stirs until the salt is no longer visible. A sample taken from the top of the beaker has the same composition as a sample taken from the bottom.How should the saltwater be classified?

A scientist tests an unknown solid element. The element is brittle, has some luster, and conducts electricity better than most nonmetals but not as well as most metals.Which classification is BEST supported by these observations?

A student is given an unknown element that is shiny, malleable, and conducts thermal energy well.Which TWO observations provide the strongest evidence that the element is a metal?

A plastic bead floats in vegetable oil but sinks when placed in rubbing alcohol.Which statement BEST compares the densities?

A student makes the following observations during an investigation:Ice melts into liquid water.A metal reacts with acid and bubbles form.Paper is cut into smaller pieces.Two clear liquids are mixed and a solid forms.Which observations provide evidence of a chemical change?

Two clear solutions are mixed. The mixture becomes cloudy and a solid settles to the bottom of the container.Which evidence BEST supports the conclusion that a chemical change may have occurred?

Water moves upward through narrow tubes in a plant stem. Water molecules are attracted to one another and also to the walls of the tubes.Which properties of water help explain this movement?

A student carefully places a small paper clip on the surface of water, and the paper clip remains on the surface.Which property of water BEST explains this observation?

Three solutions have the following pH values:Solution R: pH 3Solution S: pH 7Solution T: pH 11Which statement correctly compares the solutions to water?

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Physics

A student adds salt to a beaker of water and stirs until the salt is no longer visible. A sample taken from the top of the beaker has the same composition as a sample taken from the bottom.

How should the saltwater be classified?

A scientist tests an unknown solid element. The element is brittle, has some luster, and conducts electricity better than most nonmetals but not as well as most metals.

Which classification is BEST supported by these observations?

A student is given an unknown element that is shiny, malleable, and conducts thermal energy well.

Which TWO observations provide the strongest evidence that the element is a metal?

A plastic bead floats in vegetable oil but sinks when placed in rubbing alcohol.

Which statement BEST compares the densities?

A student makes the following observations during an investigation:
Ice melts into liquid water.
A metal reacts with acid and bubbles form.
Paper is cut into smaller pieces.
Two clear liquids are mixed and a solid forms.
Which observations provide evidence of a chemical change?

Two clear solutions are mixed. The mixture becomes cloudy and a solid settles to the bottom of the container.

Which evidence BEST supports the conclusion that a chemical change may have occurred?

Water moves upward through narrow tubes in a plant stem. Water molecules are attracted to one another and also to the walls of the tubes.

Which properties of water help explain this movement?

A student carefully places a small paper clip on the surface of water, and the paper clip remains on the surface.

Which property of water BEST explains this observation?

Three solutions have the following pH values:

Solution R: pH 3
Solution S: pH 7
Solution T: pH 11

Which statement correctly compares the solutions to water?