chemical reactions unit test 2021

Front

What are the products of the Single Replacement reaction: Zn(s) + H₂SO₄(aq) ?

Back

ZnSO₄ + H₂

Front

What type of bond is formed between two nonmetal atoms?

Back

Covalent bond.

Front

Which of the following equations is balanced? 1) PbO₂ + 2H₂ 2) SO₂ + H₂O → H₂SO₄ 3) 2Na + 2H₂O → 2NaOH + H₂

Back

2Na + 2H₂O → 2NaOH + H₂

Front

What is a Reactant in a chemical reaction?

Back

The substance changed in a chemical reaction.

Front

What class of reaction is represented by the equation: MgCO₃ → MgO + CO₂?

Back

Decomposition.

Front

What is a Product in a chemical reaction?

Back

The end result of a chemical reaction.

Front

What is the Law of Conservation of Mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a Chemical Equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What is a Coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate the number of molecules.

Front

What is a Catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed.