Unit 3.3 Review - Chemical Formulas and Equations

Unit 3.3 Review - Chemical Formulas and Equations

6th - 8th Grade

18 Qs

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Unit 3.3 Review - Chemical Formulas and Equations

Unit 3.3 Review - Chemical Formulas and Equations

Assessment

Quiz

Chemistry, Science

6th - 8th Grade

Practice Problem

Medium

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

Standards-aligned

Created by

Helen Wright

Used 37+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many oxygen (O) atoms are found in one molecule of Fe(OH)2?

0

1

2

4

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

How many total atoms are found on the product side of the equation below?

1

2

3

9

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following are NOT signs that a chemical reaction occurred?


1. precipitant

2. unexpected temperature change

3. phase change

4. unexpected color change

5. change in appearance

6. production of gas

7. odor

1 and 6

3 and 5

2 and 5

all are signs of a chemical change

Tags

NGSS.MS-PS1-2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The reaction above shows that _____ .

the atoms on the left are changed into different atoms on the right

the atoms on the left form new elements

the number of atoms on the left equal the number of atoms on the right

the compounds on the left are produced from the atoms on the right

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the following statements explains what is happening in the equation above?

CH4 is reacting with CO2 to form H2O and O2

CH4 is reacting with O2 to form CO2 and H2O

CO2 and H2O are reacting to form CH4 and O2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What information can you determine from looking at the chemical formula of a substance?

the number of atoms of each element

the state of the substance

the color of the substance

the number of molecules in the sample

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the possible chemical formula for this compound?

3 H 1 CCl

CCl3H

H3 1 CaCl

CH3Cl

Tags

NGSS.MS-PS1-1

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