Match the following: 1. Endothermic a. Neutral oxides 2. Basic and acidic properties. b. Formation of ice 3. Light is absorbed. c. Baking bread 4. Neither acidic nor basic. d. Amphoteric oxides 5. Exothermic e. Photochemical decomposition reactions

1. Baking bread is an endothermic reaction. It involves the absorption of heat. 2. An amphoteric oxide can show both acidic and basic properties. ZnO is an example for an amphoteric oxide. 3. Light is absorbed during photochemical decomposition reactions. It involves the breakdown of a molecule into its simpler components in the presence of light. 4. Neutral oxides are neither acidic nor basic. Some non-metallic oxides are usually neutral. 5. Formation of ice is an exothermic reaction. That is, heat is released during this reaction. 1. Endothermic c. Baking bread 2. Basic and acidic properties. d. Amphoteric oxides 3. Light is absorbed. e. Photochemical decomposition reactions 4. Neither acidic nor basic. a. Neutral oxides 5. Exothermic b. Formation of ice

E M B I B E

Unravelling Science Chemistry>Chapter 4 - Chemical Reactions>Exercise>Q I

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8th ICSE

IMPORTANT

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Complete the following reaction and write an equation for it:

When zinc granules are added to hydrochloric acid, it forms

Important Questions on Chemical Reactions

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8th ICSE

IMPORTANT

Unravelling Science Chemistry>Chapter 4 - Chemical Reactions>Exercise>Q A

_____ decomposition requires heat for decomposition reaction.

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8th ICSE

IMPORTANT

Unravelling Science Chemistry>Chapter 4 - Chemical Reactions>Exercise>Q A

_____ oxides are also known as basic oxides.(Metal/Non-metal)

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8th ICSE

IMPORTANT

Unravelling Science Chemistry>Chapter 4 - Chemical Reactions>Exercise>Q B

Match the following:

1. Endothermic	a. Neutral oxides
2. Basic and acidic properties.	b. Formation of ice
3. Light is absorbed.	c. Baking bread
4. Neither acidic nor basic.	d. Amphoteric oxides
5. Exothermic	e. Photochemical decomposition reactions