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Chemistry Day 1

Chemistry Day 1

Assessment

Flashcard

Science

7th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

2.

FLASHCARD QUESTION

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

3.

FLASHCARD QUESTION

Front

How many elements are in the compound C2H8O?

Back

3 (Carbon, Hydrogen, and Oxygen).

4.

FLASHCARD QUESTION

Front

Is O2 a compound molecule?

Back

FALSE (O2 is a diatomic molecule, not a compound, as it consists of only one type of element).

5.

FLASHCARD QUESTION

Front

What does a subscript in a chemical formula indicate?

Back

A subscript indicates the number of atoms of the element in a molecule.

6.

FLASHCARD QUESTION

Front

How many oxygen atoms are in H2O?

Back

1.

7.

FLASHCARD QUESTION

Front

What is the total number of atoms in the formula H2O2?

Back

4 (2 Hydrogen and 2 Oxygen).

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