IS_Unit6_Checkpoint 6.3_E

1(a) A molecule consists of two or more atoms joined together.

• True

• False

1(b) There are more than 100 kinds of atoms.

• True

• False

1(c) Molecules are usually smaller than atoms.

• True

• False

1(d) All molecules consist of different kinds of atoms joined together.

• True

• False

[E] 1(e) Answer the following question.

• True

• False

2(a) Which of the diagrams best shows an iron atom?

• (i)

• (ii)

• (iii)

2(b) Which of the diagrams best shows an oxygen molecule?

• (i)

• (ii)

• (iii)

2(c) Which of the diagrams best shows a water molecule?

• (i)

• (ii)

• (iii)

[E] 3(a) Answer the following question.

• A

• B

• C

• D

[E] 3(b) Answer the following question.

• A

• B

• C

• D