Midterm Chemistry 2024-2025- Mrs. Chacon

Midterm Chemistry 2024-2025- Mrs. Chacon

Assessment

Flashcard

Chemistry

7th - 10th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

In the modern periodic table, elements are arranged by:

Back

atomic number.

2.

FLASHCARD QUESTION

Front

What happens to the number of electrons when a neutral copper atom (atomic number 29) becomes an ion with a charge of 2+?

Back

It loses 2 electrons, resulting in 27 electrons.

3.

FLASHCARD QUESTION

Front

What is the correct symbol for an atom that has 33 protons, 36 electrons, and 42 neutrons?

Back

The symbol is As (Arsenic).

4.

FLASHCARD QUESTION

Front

What did Ernest Rutherford's gold foil experiment reveal about atoms?

Back

Atoms consist largely of empty space with a dense, positively charged nucleus.

5.

FLASHCARD QUESTION

Front

Which is the best example of a new substance forming?

Back

Lighting a match.

6.

FLASHCARD QUESTION

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

7.

FLASHCARD QUESTION

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

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