10 Chemistry CAT 4 revision

When you turn on a kettle, ___________ energy is converted into heat, sound and kinetic energy.

• gravitational potential

• electrical

• chemical

• kinetic

• Yes

• No

In an exothermic reaction, heat is _____________

• absorbed

• released

In an endothermic reaction, heat is __________

• absorbed

• released

Which of the following is an example of an endothermic reaction? (hint: there is more than one correct answer)

• melting ice

• photosynthesis

• baking a cake

• combustion

A chemical reaction when ONE compound breaks into TWO is called a __________

• decomposition reaction

• synthesis reaction

• double displacement reaction

• single displacement reaction

What type of bonding does the image depict?

• ionic bonding

• covalent bonding

• metallic bonding

An ionic bond involves the __________ of electrons from one atom to another

• donation

• sharing

A covalent bond involves the _________ of electrons

• donation

• sharing

ONE method of speeding up the rate of chemical reaction is _________