Unit 3 Review

Unit 3 Review

7th Grade

23 Qs

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Unit 3 Review

Unit 3 Review

Assessment

Quiz

Science

7th Grade

Practice Problem

Medium

NGSS
MS-PS1-1, MS-PS1-2, MS-PS1-4

+3

Standards-aligned

Created by

Shelby Simmons

Used 20+ times

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23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagram shows a chemical reaction. Which of the following most likely describes the reaction in the diagram?

The heat created a chemical reaction between the Magnesium and sulfur, creating a compound of Magnesium Sulfide with new chemical properties.

The heat created a physical reaction between the magnesium and sulfur, creating a mixture with new physical properties.

The heat evaporated the magnesium and sulfur, creating a precipitate with new chemical properties.

The heat melted the magnesium and sulfur, creating a solution with new physical properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following scenarios represents a chemical change?

water changing from a liquid to a gas

sugar being stirred in a glass of water

bacteria converting lactose into simple sugars

food breaking down into smaller pieces through chewing

Tags

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student is examining the liquid mercury inside a thermometer. If the liquid is composed of only mercury atoms, what can the student conclude?

The liquid is a pure substance, represented by the symbol Hg.

The liquid is a pure substance, represented by the symbol Mg.

The liquid is an impure substance because it is in a liquid state.

The liquid is an impure substance because it is inside a thermometer.

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which list correctly matched the elements with their symbols?

Oxygen O, Silicon Si, Carbon C

Boron B, Silicon Si, Carbon Ca

Calcium Ca, Neon Ne, Silicon S

Magnesium Mg, Neon Ne, Sodium S

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical formula is displayed below: (NH4)3SO4. How many atoms, in total, are in this chemical formula?

18

12

22

20

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A chemical formula is displayed below: 2HNO3. How many atoms, in total, are in this chemical formula?

12

18

10

8

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The compound NaCl will dissolve easily in water. The process of dissolving -

does not cause any change

increases the pH of the water

is a physical change

is a chemical change

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