Subscripts, Coefficients, and Counting Atoms

Subscripts, Coefficients, and Counting Atoms

8th Grade

15 Qs

quiz-placeholder

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Subscripts, Coefficients, and Counting Atoms

Subscripts, Coefficients, and Counting Atoms

Assessment

Quiz

Science

8th Grade

Practice Problem

Hard

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

Standards-aligned

Created by

Lisa Thompson

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15 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

How many atoms/ions are in one formula unit of Zn(C2H3O2)2 ?

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many different elements are present in H2COCH2

5

4

3

2

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation obeys the law of conservation of mass?

H2 + O2 ------>  H20

C + 2H2 ---->  CH4

2Fe2O3  ------> 2O2 + 4Fe

Tags

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A subscript is the small number below the element symbol that tells the number of _______ of that element.

atoms

valence electrons

protons

elements

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Hydrogen atoms are in 4H2O?

6

8

2

4

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Oxygen atoms are in H2O?

1

2

0

4

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Nitrogen atoms are in (NH₄)₂CrO₄?

1

2

8

16

Tags

NGSS.MS-PS1-1

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