11RE March revision quiz

A student wanted to measure the temperature change in an experiment.

Some of the equipment is listed below.

Which one would be ESSENTIAL?

• Beaker

• Polystyrene cup

• Lid

• Thermometer

A student wanted to study the temperature change when

magnesium ribbon was added to hydrochloric acid.

What control variables would be needed?

• Amount of magnesium

• Mass of magnesium

• Amount of acid

• Volume of acid

A student wanted to know which reaction produced the most heat.

They placed different metals into some hydrochloric acid.

What was the independent variable?

• Types of metal

• Final temperature

• Types of acid

• Starting temperature

A student wanted to know which reaction produced the most heat.

They placed different metals into some hydrochloric acid.

What was the dependent variable?

• Starting temperature

• Temperature change

• Type of metal

• Type of acid

Ionic compounds such as salts can conduct electricity when...

• solid

• liquid

• gas

• dissolved (aqueous)

Carbon comes in many forms. Which type of carbon is the weakest?

• Diamond

• Fullerenes

• Graphite

• Graphene

What holds the carbon atoms together in a diamond?

• Covalent bonds

• Ionic bonds

• Metallic bonds

• Intermolecular forces

Metals are malleable and ductile. This is because...

• Delocalised electrons can move

• Layers can slide over each other easily

• Strong metallic bonds hold the atoms together

• Electrostatic attraction holds the layers in place

Metals are good conductors. This is because...

• Delocalised electrons can move

• Layers can slide over each other easily

• Strong metallic bonds hold the atoms together

• Electrostatic attraction holds the layers in place

Metals have a high melting point. This is because...

• Delocalised electrons can move

• Layers can slide over each other easily

• Strong metallic bonds hold the atoms together

• Electrostatic attraction holds the layers in place