A student heated a 10 gram sample of a chemical in an open container. A chemical reaction occurred, and the mass of the sample was measured again. The mass of the sample was found to be less than before the reaction. Which of the following best explains the decrease in mass of the sample?

Some of the particles escaped as a gas formed.

The heat caused the chemical to become less dense.

The reaction gave off more heat than was added.

Some of the lighter particles were destroyed.

A student measures the mass of an iron nail to be 25 grams. The student heats the nail over a bunsen burner and measures the mass of the nail afterwards. The mass of the nail is found to be greater after burning. Which of the following best explains the increase in mass of the nail?

Extra particles from the air were added to the nail during burning.

The heat caused the compound to become more dense.

The reaction gave off less heat than was added.

Some of the heavier particles multiplied inside the nail.

1. Equal amounts of four different substances (A-D) where added separately to equal amounts of an acid and a thermometer placed in the mixture. For which substance is the reaction the most exothermic ?

D. temperature rises by 5 $$\degree C$$

A. temperature rises by 3 $$\degree C$$

B. temperature falls by 5 $$\degree C$$

C. temperature falls by 3 $$\degree C$$

what is the definition of physical change?

changes affecting the form of a chemical substance, but not its chemical identity.

any change that results in the formation of new chemical substances.

any property that is measurable, whose value describes a state of a physical system

What is a chemical change?

When two chemicals react with one another to form a new substance

How two chemicals react with one another when combined

A property that we can measure or observe with our 5 senses or other tools

When a change occurs but it does not result in the formation of a new substance

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?

The water's TEMPERATURE changed

The powder DISSOLVED in the water

The water turned the COLOR yellow

When mixing milk and vinegar, a white, chunky, solid substance is formed. What has occurred?

Physical change: state of matter

The law of conservation of mass states

atoms cannot be created or destroyed

chemical reactions create new atoms

reactants vanish once a reaction takes place

products appear when a reaction takes place

Chemistry Network Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-2, MS-PS1-5, MS-PS1-1

+6

Standards-aligned

Kimberly Hinkey

Used 60+ times

FREE Resource

35 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Element

Compound

Mixture

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Element

Compound

Mixture

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

This diagram represents a _____.

pure substance that is a compound

mixture of elements

pure substance that is an element

mixture of compounds

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

What type of change is this?

Chemical

Melting

Evaporation

Condensation

Sublimation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

5.

MULTIPLE CHOICE QUESTION

10 sec • 5 pts

Mixture or Pure Substance?

Mixture

Pure Substance

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

If reaction starts with 20g of reactants it should produce

a total of 40g of products

a total of 10g of products

a total of 80 g of products

a total of 20g of products

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

A

B

C

D

Tags

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

0 questions

Common Assessment 2 at home Review

Quiz

•

0 questions

Intro - Unit 1 Review

Quiz

•

0 questions

Matter

Quiz

•

0 questions

Chemistry Quiz #2

Quiz

•

0 questions

Unit 5 Review

Quiz

•

0 questions

Unit 6 Review

Quiz

•

0 questions

Matter Review

Quiz

•

0 questions

Mrs. Vandenbos' Chemical Reaction Review

Quiz

•

Popular Resources on Wayground

5 questions

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

Quiz

•

1st - 5th Grade

25 questions

Multiplication Facts

Quiz

•

5th 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

11 questions

How well do you know your Christmas Characters?

Lesson

•

3rd Grade

14 questions

Christmas Trivia

Quiz

•

5th Grade

20 questions

How the Grinch Stole Christmas

Quiz

•

5th Grade

Discover more resources for Science

20 questions

Name That Tune Christmas Edition

Quiz

•

6th - 9th Grade

18 questions

Christmas Science

Quiz

•

6th - 8th Grade

37 questions

8.10B Weather Patterns

Quiz

•

8th Grade

10 questions

Exploring Plate Tectonics and Their Boundaries

Interactive video

•

6th - 10th Grade

22 questions

Amplify - Traits and Reproduction

Quiz

•

8th Grade

15 questions

Snow

Quiz

•

6th - 8th Grade

15 questions

Movie Trivia for Christmas

Quiz

•

6th - 8th Grade

20 questions

Cell Organelles and Functions

Quiz

•

6th - 8th Grade

Chemistry Network Review

35 questions

This diagram represents a _____.

What type of change is this?

Mixture or Pure Substance?

If reaction starts with 20g of reactants it should produce

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

A student heated a 10 gram sample of a chemical in an open container. A chemical reaction occurred, and the mass of the sample was measured again. The mass of the sample was found to be less than before the reaction. Which of the following best explains the decrease in mass of the sample?

A student measures the mass of an iron nail to be 25 grams. The student heats the nail over a bunsen burner and measures the mass of the nail afterwards. The mass of the nail is found to be greater after burning. Which of the following best explains the increase in mass of the nail?

Frying an egg is an example of

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science