1.1. Hydrogen peroxide decomposes slowly into water and oxygen.

Complete the word equation for this reaction.

_______________   →   ______________   +   ______________

1.2. The reaction in part (a) can be sped up by a catalyst.

Complete the sentence below.

A catalyst provides an alternative ____________________ that has a lower ____________________ energy.

1.3. The reaction profile for the uncatalysed decomposition of hydrogen peroxide is shown in Figure 1.

Figure 1

Draw one line from each label to what the label represents on the reaction profile.

1.4. Circle the correct words to complete the sentence.

1.5. Circle the correct words to complete the sentence.