Chemical Reactions

Front

What is the pH of water?

Back

7

Front

According to the theory of conservation of mass, which property of the reactants is always unchanged after a chemical reaction? Options: mass, colour, state, volume

Back

mass

Front

The chemical found in chloroplasts that traps light in photosynthesis in plants is called _______________

Back

chlorophyll

Front

In your own words, what is a chemical reaction?

Back

A process where substances are transformed into different substances

Front

Balanced chemical equation for the reaction: N₂ + H₂ → NH₃? Options: N₂ + 3H₂ → 2NH₃, N₂ + H₂ → NH₃, 2N₂ + 3H₂ → 2NH₃, N₂ + 2H₂ → NH₃

Back

N₂ + 3H₂ → 2NH₃

Front

The pH range of an acid is:

Back

0 to 7

Front

To make something more acidic, should you add more OH- or H⁺ ions?

Back

Add more H⁺ ions

Front

What are two characteristics of a base?

Back

Bitter taste and slippery feel

Front

What is the pH range of a base?

Back

7-14

Front

Charges of subatomic particles: Electrons - ______, Protons - ______, Neutrons - ______

Back

Electrons - Negative, Protons - Positive, Neutrons - Neutral