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Quantitative Chemistry basics

Authored by R Chard

Science, Chemistry

9th - 11th Grade

Used 46+ times

Quantitative Chemistry basics
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these is NOT true?

· In a chemical reaction, no atoms are lost or made, they are only re-arranged

· The mass of reactants = mass of products

· Atoms can be created or destroyed

· Atoms cannot be created or destroyed

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the sum of the reactants Mr’s is 52, what is the sum of the products Mr’s?

26

52

104

It's impossible to tell

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When weighed, the sum of the mass of the reactants is 80g, the sum of the mass of the products is 78g. Why?

· An error has been made measuring

· One of the products is a gas

· One of the reactants is a gas

· One of the products is an oxide

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Why does the mass in some chemical reactions seem to increase?

· An error has been made measuring

· One of the products is a gas

· One of the reactants is a gas

· One of the products is an oxide

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is the correct representation of the formula of water?

· H2O

· H2O

· h2O

· O2H

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the relative atomic mass of Carbon?

6

12

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the relative atomic mass of Magnesium?

24

12

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