Page 209 - Science Course 1 (Book 1)

Mo6-L2: Lesson Review Quiz (True of False)

Directions: On the line before each statement, write T if the statement is true or F if the statement is false.
If the statement is false, change the underlined word(s) to make it true. Write your changes on the lines
provided.

1. A proton has a charge of 1–.

2. Neutrons and protons have the same relative mass.

3. The number of electrons in an atom of an element is the element’s atomic number.

4. Neutral atoms have the same number of protons and electrons.

5. Carbon-12 and carbon-13 are isotopes, so they have different numbers of neutrons.

6. The mass number of an atom can be determined by adding the number of electrons and the
number of neutrons.

Mo6-L2: Lesson Review Quiz (Multiple Choice)

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

7. Which type of decay does NOT result in the change of one element into another?
A. beta decay
B. alpha decay
C. gamma decay
8. An ion forms when an atom gains or loses
A. protons.
B. neutrons.
C. electrons.
9. An alpha particle consists of
A. energy only.
B. 1 high-energy electron.
C. 1 proton and 1 electron.
D. 2 protons and 2 neutrons.
10. A positively charged ion is formed when
A. a neutron is lost.
B. an electron is lost.
C. a neutron is gained.
D. an electron is gained.

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