ACIDS and BASES

Which of the following substances has a pH greater than 7?

• normal (clean) rain

• orange juice

• bananas

• soap

Acids produce hydrogen gas when they react with

• salts.

• bases.

• water.

• metals.

Properties of bases include

• a sour taste.

• a slippery feel.

• the ability to conduct electricity.

• two options are correct.

Which of the following acids is strongest?

• sulfuric acid

• lemon juice

• acid rain

• vinegar

Products of a neutralization reaction include

• hydroxide ions.

• hydrogen ions.

• water.

• Two option are correct.

You can increase the rate of a chemical reaction by

• increasing the temperature of reactants.

• decreasing the surface area of reactants.

• decreasing the concentration of reactants.

• All options are correct

A catalyst

• can catalyze just one chemical reaction.

• is always changed in a chemical reaction.

• becomes a product in a chemical reaction.

• helps reactants come together in a chemical reaction.

The general equation for a synthesis reaction is

• AB → A + B

• A + BC → B + AC

• A + B→ C

• AB + C→ A + BC

Which of the following is a decomposition reaction?

• 2Na + Cl₂→ 2NaCl

• 2H₂O → 2H₂ + O₂

• CH₄ + O₂→ CO₂ + H₂O

• NaCl + AgF → NaF + AgCl

Which type of reaction is represented by the following chemical equation? 2K + 2H₂O → 2KOH + H₂

• double replacement

• single replacement

• decomposition

• synthesis