Year 10 CSHS Substantial Chemistry Revision Quiz

What does a catalyst do in a chemical reaction?

• Increases the yield of product

• Increases the rate of reaction

• Makes the reaction safer

• Makes the reaction cheaper to run

Which of the following does NOT increase the rate of reaction?

• Increasing Temperature

• Increasing Surface Area

• Increasing Size of the Beaker

• Stirring

Collision theory states that

• Particles must collide with each other in order to react

• Particles need to have enough energy to break and form new bonds

• Particles must collide at the right angle

• All of the above

What charge does an atom have if it GAINS electrons?

• Positive (+)

• Negative (-)

• atoms can not gain electrons

What is the formula for magnesium chloride?

• MgCl
• Mg₂Cl
• MgCl₂
• Mg(ClO₃)₂

Matter in chemical reactions...

• can be destroyed on rare occasions

• is never destroyed

• is often created

• can be created and destroyed at the same time

Zinc + Hydrochloric acid ---->  X  + Hydrogen
in this reaction 'X' will be

• Zinc chloride
• Zinc nitrate
• Zinc sulfate
• Zinc oxide

the reaction between an acid and a base is called a

• combustion reaction
• neutralisation reaction
• precipitation reaction
• displacement reaction

an exothermic reaction is one which

• absorbs energy

• always results in a change in the mass of reacting substances

• leads to a decrease in temperature

• releases energy

complete the following word equation:

Nitric acid + sodium hydroxide --> X + water

• sodium chloride

• sodium noxide

• nitrogen dioxide

• sodium nitrate