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Stoichiometry Unit Review

Authored by David Dyer

Chemistry

9th Grade

NGSS covered

Used 22+ times

Stoichiometry Unit Review
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19 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

What is the measurement using the correct number of sig. figs.?

39.5 mL
40 mL
39 mL
40.0 mL

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

This bullseye demonstrates...

High Accuracy & High Precision
High Accuracy & Low Precision
Low Accuracy & High Precision
Low Accuracy & Low Precision

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Media Image

Which of the following numbers have two significant figures?

21

4900.

0.000210

0.023

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which has more molecules?

1 mole H2O

1 mole NH3

1 mole CCl4

There are all the same

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The molar mass of an element is equal to its...

Atomic mass expressed in grams

Atomic number
Oxidation number
Valence electrons

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

A mass of 6 g of Carbon contains

1 mole of C
2 moles of C
0.5 moles of C
72 moles of C

Tags

NGSS.HS-PS1-7

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the following quantities are conserved in every chemical reaction? (select all that apply)

mass

number of atoms

number of molecules

moles

Tags

NGSS.HS-PS1-7

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