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1s Sems Review B

1s Sems Review B

Assessment

Flashcard

Chemistry

11th 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 a compound?

Back

A chemical combination of elements.

2.

FLASHCARD QUESTION

Front

According to the Law of Definite Composition, how do elements in a compound combine?

Back

In the same proportion by mass.

3.

FLASHCARD QUESTION

Front

If you were to combine 80 grams of oxygen with some hydrogen, how much hydrogen would you need to completely use up all of the oxygen?

Back

20 grams.

4.

FLASHCARD QUESTION

Front

What is the accepted mass ratio for the mass of magnesium to the mass of oxygen?

Back

1.52.

5.

FLASHCARD QUESTION

Front

What is the mass ratio of hydrogen to oxygen in water?

Back

1:8.

6.

FLASHCARD QUESTION

Front

Define the term 'element'.

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

7.

FLASHCARD QUESTION

Front

What is the difference between a mixture and a compound?

Back

A mixture is a physical combination of substances, while a compound is a chemical combination of elements.

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