Question 43
Tick (✓) the three correct statements about chemical reactions.
1. The number of atoms in the reactants is the same as the number of atoms in the products.
2. New atoms are formed in the reaction and combine to form the products.
3. The atoms rearrange themselves to form new molecules.
4. Some atoms disappear, while others increase in number to form the products.
5. In the process of photosynthesis, oxygen and water combine to form carbon dioxide and glucose.
6. Rusting occurs only when iron is exposed to oxygen and moisture.
1. The number of atoms in the reactants is the same as the number of atoms in the products.
2. New atoms are formed in the reaction and combine to form the products.
3. The atoms rearrange themselves to form new molecules.
4. Some atoms disappear, while others increase in number to form the products.
5. In the process of photosynthesis, oxygen and water combine to form carbon dioxide and glucose.
6. Rusting occurs only when iron is exposed to oxygen and moisture.
