Which of the following is true of oxygen?

Oxygen is an element because its most basic unit is a single type of atom

Oxygen is a compound because its most basic unit is a single type of atom.

Oxygen is a mixture because its most basic unit contains more than one particle.

Oxygen is a compound because its most basic unit contains more than one type of particle.

when 2 or more substances physically combine

a pure substance that is made from a single type of atom.

a substance that consists of 118 Elements total.

when 2 or more elements chemically combine

The blue numbers in the image below represent ________

I don't know, and don't want to try

none of the answers are correct

Elements, Compounds & Mixtures

Quiz

•

Science

•

7th - 8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-1, MS-PS1-4, MS-PS1-5

Standards-aligned

Jennifer Gonzalez

Used 268+ times

FREE Resource

23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

Compound

Element

Mixture

None of the Above

Tags

NGSS.MS-PS1-4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Water is an example of:

compound

element

solution

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mixtures are separated through ___________changes.

mixture

compound

physical

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

This picture represents which of the following?

element

compound

mixture

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This picture represents which of the following?

element

compound

mixture

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This picture represents which of the following?

element

compound

mixture

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

These contain only one kind of atom.

element

compound

mixture

water

Tags

NGSS.MS-PS1-1

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Elements, Compounds & Mixtures

23 questions

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

Water is an example of:

Mixtures are separated through ___________changes.

This picture represents which of the following?

This picture represents which of the following?

This picture represents which of the following?

These contain only one kind of atom.

The air is a _________.

Elements can be broken down into simpler substances.

These must be separated chemically.

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