Page 219 - Science Course 1 (Book 1)

Mo6-L3: Key Concept Check

Directions: Label this diagram by writing the correct term on each line.

Directions: Answer each question or respond to each statement on the lines provided.

4. Which particle in an atom has a positive charge?

5. Which particle in an atom has no charge?

6. Which particle in an atom has a negative charge?

7. Where is most of the mass of an atom found?

8. Describe the structure of the atom in the diagram above. How many of each type of particle does the atom
have?

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

9. Changing the number of protons in an atom makes
A. an ion.
B. an isotope.
C. a new element.
10. If an atom has 6 protons, 6 neutrons, and 6 electrons, its isotope would have a different number of
A. protons.
B. neutrons.
C. electrons.
11. An atom with the same number of protons and electrons has a
A. neutral charge.
B. positive charge.
C. negative charge.

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