Page 135 - Science Course 2 (Book 1)

Direction: Complete this concept map by choosing terms from the word bank and writing them in the
correct spaces. Some terms may be used more than once.

atoms bonds compounds electrons metalloids
metals neutrons nonmetals periodic table protons

Elements

are divided are composed can join together
into of individual to form

1. 5. 9.

and made up of by forming chemical

2. 6. 10.

and and between

3. 7. 11.

on the and

4. 8.

Mo5-L1: Key Concept Check

Direction: On the line before each statement, write the letter of the correct answer.

1. Elements combine to form millions of
A. metals.
B. mixtures.
C. compounds.

2. The forces that hold atoms together in combinations are called
A. energy bonds.
B. nuclear bonds.
C. chemical bonds.

3. Every electron has a
A. neutral charge.
B. positive charge.
C. negative charge.

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