Chemistry Fall Semester Exam Review 2023

Front

What type of reaction occurs when two compounds exchange ions?

Back

Double displacement reaction.

Front

What is the measurement that depends on gravity?

Back

Weight.

Front

What is the chemical formula for barium chromate?

Back

BaCrO₄.

Front

What is the name of the compound FeO?

Back

Iron (II) oxide.

Front

How many grams of oxygen are required to react with 20.0 g of calcium in the reaction 2 Ca + O₂ → 2 CaO?

Back

8 g.

Front

What is the molar mass of oxygen gas (O₂)?

Back

32 g/mol.

Front

What is the molar mass of calcium (Ca)?

Back

40 g/mol.

Front

Define a single displacement reaction.

Back

A reaction where one element replaces another in a compound.

Front

What is a combustion reaction?

Back

A reaction that involves the burning of a substance in the presence of oxygen, producing heat and light.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.