Combination and Decomposition Reactions (NCEA Level 1 90947)

Front

What is the state of calcium carbonate?

Back

Solid

Front

Which chemical reaction breaks down into 2 substances?

Back

Decomposition

Front

What color is oxygen gas?

Back

Colourless

Front

Write the balanced equation for the reaction of aluminum and oxygen to form aluminum oxide.

Back

4Al + O2 → 2Al2O3

Front

What does (s) mean in a chemical reaction?

Back

Solid

Front

Define a combination reaction.

Back

A reaction where two or more substances combine to form a single product.

Front

Define a decomposition reaction.

Back

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

Front

What is the general form of a combination reaction?

Back

A + B → AB

Front

What is the general form of a decomposition reaction?

Back

AB → A + B

Front

What is an example of a combination reaction?

Back

Hydrogen + Oxygen → Water (2H2 + O2 → 2H2O)