Identify the reactant(s) and product(s) of the reaction.

Hydrogen and oxygen are the reactants, and water is the product.

All three are reactants and none are products.

Hydrogen and water are the reactants, and oxygen is the product.

Water and oxygen are the reactants, and hydrogen is the product.

For an investigation a student added 100 mL of a blue solution of CuSO 4 into a beaker. The student then placed a new, shiny, silver-colored strip of zinc metal into the solution and observed the changes. The student inferred that a chemical reaction occurred. What evidence best supports this inference?

A dark solid formed on the zinc metal.

The zinc metal remained silver-colored and shiny

The CuSO 4 solution stayed blue when the zinc metal was added.

What evidence best supports that a chemical reaction has occurred in the picture above?

A yellow precipitate (solid) formed after 2 liquids were mixed.

It is a physical change because food dye is being added.

A precipitate (solid) formed after because steam is produced.

The temperature of liquid lowered creating a clear solid.

Why is ice freezing ONLY a physical change?

The molecules of water do NOT change. They only slow down and vibrate in position.

It can stay cold when you put it in the freezer.

Its physical appearance does NOT change.

In any chemical reaction, the mass of the products is always:

the same as the mass of the reactants

slightly less than the mass of the reactants

much less than the mass of the reactants

greater than the mass of the reactants

According to scientific principle #6 properties (denstiy, hardness, melting point, solubility) of a substance will:

stay the same, even if the amount of the substance is different

stay the same ONLY if the amount of the substance is the same

change based on the amount of the substance present

change because it isn't possible to stay the same if the amount chagnes

Kent found 2 wood cubes (like the ones we used in class) and wanted to know if they were made of the same type of wood. Unlike, in class the 2 cubes are different sizes. How could Kent determine if the cubes are made of the same type of wood.

calculate density for both cubes

measure the length, width, and height and calculate for volume

burn the wood cubes and observe how they change

A phase change IS NOT a chemical reaction. Choose the options that support this claim. You may choose more than one.

The substance are mixed together and keep their properties

The atoms and molecules are mixed together BUT do not create new molecules

The atoms making up the molecules are rearranged creating new substances

The atoms are rearranged creating a new product with a different arrangement of atoms

How can we determine if 2 unknown substances are the same or different substance?

test properties of the substances

observe the size of each substance

observe the shape of the substances

make a hypothesis, educated guess

Midterm Exam Review - Chemistry Unit 1

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-5, MS-PS1-2, MS-PS1-4

+3

Standards-aligned

Debbie Psenicka

Used 577+ times

FREE Resource

35 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This is an accurate model because...

It is missing one more CO₂ in the model.

Only the reactant side has the correct models for the formulas of each molecule.

It has the correct number of molecules and atoms for both sides of the equation.

None of the above

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the law of conservation of mass, the number of Carbon, Hydrogen, and Oxygen atoms are the same on both sides of the chemical equation above.

True

False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

How many atoms of carbon are shown on EACH side of this chemical reaction?

1

3

4

5

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side?

2

4

6

You need more information to answer this question

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The total amount of matter (atoms) before and after a chemical reaction, remains the same.

True

False

Tags

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

During a chemical reaction, matter cannot be _______ or created.

bought

changed

destroyed

made

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following choices is the reactant for the equation above?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Create a free account and access millions of resources

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

37 questions

MS-PS2-4 Gravitational Force

Quiz

•

7th - 8th Grade

33 questions

7th Grade 2nd Semester Final Exam - Life Science

Quiz

•

7th Grade

37 questions

Genetics

Quiz

•

7th Grade

30 questions

Severe Weather

Quiz

•

4th - 8th Grade

38 questions

The Material World

Quiz

•

7th Grade

32 questions

The Flow of Energy Drives the Cycling of Matter in Ecosystem

Quiz

•

6th - 8th Grade

30 questions

Hamilton County Benchmark 1 Spiral Review 23-24

Quiz

•

7th Grade

30 questions

Exploring Life

Quiz

•

7th Grade

Popular Resources on Wayground

5 questions

This is not a...winter edition (Drawing game)

Quiz

•

1st - 5th Grade

15 questions

4:3 Model Multiplication of Decimals by Whole Numbers

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

10 questions

The Best Christmas Pageant Ever Chapters 1 & 2

Quiz

•

4th Grade

12 questions

Unit 4 Review Day

Quiz

•

3rd Grade

10 questions

Identify Iconic Christmas Movie Scenes

Interactive video

•

6th - 10th Grade

20 questions

Christmas Trivia

Quiz

•

6th - 8th Grade

18 questions

Kids Christmas Trivia

Quiz

•

KG - 5th Grade

Discover more resources for Science

20 questions

Convection, Conduction, and Radiation

Quiz

•

6th - 8th Grade

10 questions

Exploring the Energy Cycle: Photosynthesis and Cellular Respiration

Interactive video

•

6th - 10th Grade

22 questions

Rock Transformations Amplify Final Test

Quiz

•

6th - 8th Grade

20 questions

Human Body Systems Review

Quiz

•

7th Grade

10 questions

Exploring Plate Tectonics and Their Boundaries

Interactive video

•

6th - 10th Grade

10 questions

Understanding Moon Phases and Characteristics

Interactive video

•

5th - 8th Grade

20 questions

Energy Transformations

Quiz

•

6th - 8th Grade

10 questions

Exploring Light and Waves Concepts

Interactive video

•

6th - 10th Grade

Midterm Exam Review - Chemistry Unit 1

35 questions

This is an accurate model because...

According to the law of conservation of mass, the number of Carbon, Hydrogen, and Oxygen atoms are the same on both sides of the chemical equation above.

How many atoms of carbon are shown on EACH side of this chemical reaction?

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side?

The total amount of matter (atoms) before and after a chemical reaction, remains the same.

During a chemical reaction, matter cannot be _______ or created.

Which of the following choices is the reactant for the equation above?

Identify the reactant(s) and product(s) of the reaction.

__________ are the substances present before the chemical reaction takes place.

The _________ are the substances present after the chemical reaction takes place.

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science