Physical Science Final Exam

Physical Science Final Exam

Assessment

Flashcard

Chemistry

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the independent variable in an experiment?

Back

The variable that changes.

2.

FLASHCARD QUESTION

Front

Which category of elements typically forms positive ions?

Back

Metals.

3.

FLASHCARD QUESTION

Front

What is the charge of an aluminum ion with 13 protons and 10 electrons?

Back

3+.

4.

FLASHCARD QUESTION

Front

How do you calculate the mass number of an atom?

Back

Mass number = Protons + Neutrons.

5.

FLASHCARD QUESTION

Front

What is the mass number of an ion with 83 protons, 80 electrons, and 126 neutrons?

Back

209.

6.

FLASHCARD QUESTION

Front

What do acids begin with?

Back

H+.

7.

FLASHCARD QUESTION

Front

What do bases end with?

Back

OH-.

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