Unit 04 Test Review - IPC

Front

What element is represented by the letter C?

Back

Carbon

Front

According to the law of conservation of mass, if you start with 40g of hydrogen peroxide, how much mass should you end up with in water and oxygen combined?

Back

40g

Front

Which equation demonstrates the law of conservation of mass?

Back

2K + Cl₂ → 2KCl

Front

Why did the solution in the beaker lose mass?

Back

Some of the water molecules turned into gas and dissipated.

Front

What element must be present for a combustion reaction to occur?

Back

Oxygen

Front

Define the law of conservation of mass.

Back

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

Front

What is a decomposition reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

Give an example of a combustion reaction.

Back

Burning of methane: CH₄ + 2O₂ → CO₂ + 2H₂O.

Front

What is the chemical formula for water?

Back

H₂O

Front

What is the product of the decomposition of hydrogen peroxide (H₂O₂)?

Back

Water (H₂O) and oxygen (O₂).