What is the formula for calculating the density of an object?

Density = Mass $$\times$$ Volume

If you tear a piece of paper into small pieces, what type of change has occurred?

Both chemical and physical change

Which of the following best explains why dissolving salt in water is a physical change?

The salt and water can be separated by physical means

The salt changes into a new substance

The salt reacts with water to form a gas

You are given a mixture of sand and iron filings. Describe a method you could use to separate them and explain why it works.

Use a magnet because iron is magnetic and sand is not

Add water because both dissolve

Heat the mixture because sand melts first

Use a filter because sand is smaller

A student finds that a solid object sinks in water. What can she infer about the density of the object compared to water?

The object is more dense than water

The object is less dense than water

The object has the same density as water

The object is not made of matter

Explain why melting ice is considered a physical change and not a chemical change.

Because the composition of water does not change; only its state changes

Because new substances are formed

A student observes that when sugar is heated, it turns brown and gives off a sweet smell. What evidence suggests a chemical change has occurred?

The sugar changes color and produces a new odor, indicating new substances are formed

The sugar melts and becomes a liquid

The sugar is crushed into powder

When lithium metal is dropped into a container of water, it sparks and fizzes, and the water begins to bubble violently. The conclusion that can be drawn from this is:

A new substance is created because this is a chemical change.

No new substances are created because this is a chemical change.

No new substances are created because this is a physical change.

A new substance is created because this is a physical change.

Topic 1 Test

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Easy

•

NGSS.MS-PS1-2, PS1.A.2, NGSS.MS-PS1-4

+2

Standards-aligned

Joseph McNulty

Used 1+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which state of matter has a definite shape and a definite volume?

Solid

Liquid

Gas

Plasma

What is the term for a substance made of only one kind of atom?

Compound

Mixture

Element

Solution

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following is an example of a mixture?

Air

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which property can be used to classify matter as a liquid?

Has a definite shape

Has a definite volume but no definite shape

Has no definite volume or shape

Is made of only one type of atom

What is the smallest unit of an element that retains the properties of that element?

Atom

Molecule

Compound

Mixture

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following is a physical property?

Flammability

Reactivity with acid

Color

Ability to rust

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which tool would you use to measure the mass of an object?

Ruler

Thermometer

Triple-Beam Balance

Graduated cylinder

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Topic 1 Test

30 questions

Which state of matter has a definite shape and a definite volume?

What is the term for a substance made of only one kind of atom?

Which of the following is an example of a mixture?

Which property can be used to classify matter as a liquid?

What is the smallest unit of an element that retains the properties of that element?

Which of the following is a physical property?

Which tool would you use to measure the mass of an object?

What is the SI unit for measuring length?

Which unit would you use to measure the volume of a liquid?

What is the formula for calculating the density of an object?

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