Chemistry Semester 1 Review

Front

What happens to the mass of a sample as its volume increases?

Back

The mass increases.

Front

What is the name of the acid represented by the formula HC₂H₃O₂?

Back

Acetic Acid.

Front

Which element has the electron configuration that corresponds to copper?

Back

Copper (Cu).

Front

Identify the incorrect combination of compound name and its formula: hydrobromic acid; HBr, calcium sulfate; CaSO₄, beryllium oxide; BeO, nickel (II) chloride; Ni₂Cl, ammonium chromate; (NH₄)₂CrO₄.

Back

Nickel (II) chloride; Ni₂Cl.

Front

What type of reaction is represented by the equation: 4Fe + 3O₂ → 2Fe₂O₃?

Back

Synthesis.

Front

Define a synthesis reaction in chemistry.

Back

A synthesis reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is the pH range of acids?

Back

The pH range of acids is less than 7.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.