Balancing Equations 1

Balancing Equations 1

Assessment

Interactive Video

Chemistry

9th - 12th Grade

Medium

Created by

J. Coronado

Used 5+ times

FREE Resource

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the law of conservation of mass state about atoms in a chemical reaction?

Atoms are transferred to another dimension

Atoms are destroyed and created

Atoms are neither created nor destroyed

Atoms multiply during reactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What must be done to balance a chemical equation?

Change the subscripts in the compounds

Add catalysts to the reaction

Use only even numbers in equations

Adjust the coefficients before the molecules

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the formula 3O2, what does the subscript '2' indicate?

There are two molecules of oxygen

The oxygen is doubled

There are three molecules of oxygen

Each molecule has two oxygen atoms

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many sodium atoms are there in two molecules of Na2O?

Four sodium atoms

Eight sodium atoms

Six sodium atoms

Two sodium atoms

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you have two molecules of SnO2, how many oxygen atoms are present?

Four oxygen atoms

Three oxygen atoms

Six oxygen atoms

Two oxygen atoms