Counting Atoms in a Chemical Formula

Counting Atoms in a Chemical Formula

Assessment

Interactive Video

Science

8th Grade

Medium

Created by

Alyssa Kreutzer

Used 2+ times

FREE Resource

5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What information does a chemical formula provide?

The color and state of matter of a substance.

The elements involved and the number of atoms of each element.

The temperature and pressure at which a reaction occurs.

The density and volume of a compound.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do subscripts and coefficients differ in a chemical formula like 2H₂O?

Subscripts apply to the entire compound, while coefficients apply only to the atom they are behind.

Subscripts indicate the number of molecules, while coefficients indicate the number of atoms.

Subscripts apply only to the atom they are behind, while coefficients apply to the entire compound.

Subscripts are multiplied by coefficients, but coefficients are not affected by subscripts.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a chemical formula like Ba(OH)₂, what does the subscript '2' outside the parentheses indicate?

There are 2 Barium atoms.

There are 2 Oxygen atoms and 2 Hydrogen atoms.

There are 2 Oxygen atoms only.

There are 2 Hydrogen atoms only.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many total atoms are present in one molecule of H₂O?

1

2

3

4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many hydrogen atoms are in 3H₂O?

2

3

5

6

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