Final Exam Review - Part 1

Front

What is the charge of Calcium (Ca) when it loses 2 electrons?

Back

Ca has a +2 charge.

Front

What does it mean for an equation to be balanced in chemistry?

Back

A balanced equation has the same number of each type of atom on both sides.

Front

What is the metal ion present in Calcium Chloride (CaCl2)?

Back

The metal ion is Ca⁺².

Front

What process allows heat to transfer from your hand to ice?

Back

Conduction allows heat transfer from your hand to the ice.

Front

What state of matter is characterized by having a definite volume but no definite shape?

Back

Liquid.

Front

What happens to the electrons in an atom when it becomes a positively charged ion?

Back

The atom loses electrons.

Front

What is the principle of conservation of mass in a chemical reaction?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its chemical composition.

Front

What is the boiling point of water at sea level?

Back

100 degrees Celsius (212 degrees Fahrenheit).

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.