StJ AQA Chemistry Revision: Lesson 1

What do we call a substance made of one type of atom?

• Element

• Compound

• Mixture

What do we call a substance which has more than one type of atom not chemically bonded together?

• Element

• Compound

• Mixture

What do we call a substance which has more than one type of atom which are chemically bonded together?

• Element

• Compound

• Mixture

True or False?

To find the number of neutrons of an element you add the atomic number and mass numbers together?

• True

• False - its the same as the atomic number

• False - You subtract the atomic number from the mass number

• False - atoms don't have neutrons

What is an isotope?

• An atom with no protons

• An atom with a different number of electrons

• An atom with no neutrons

• An atom with the same number of protons and electrons, but a different number of neutrons

What kind of bonding would you have in a molecule of carbon dioxide?

• covalent bonding

• ionic bonding

• metallic bonding

Which is the correct word equation for the reaction below:
 $Fe\ +\ Cl\ \rightarrow\ FeCl3$  

• Flourine + Chlorine -> Flourine chloride

• Iron + Chlorine -> Iron chlorate

• Iron + Chlorine -> Iron chloride 

 $Fe\ +\ Cl\ \rightarrow\ FeCl3$  Which is the correctly balanced equation for the reaction

• 2Fe + 2Cl -> FeCl3

• Fe + 3Cl -> FeCl3

Which separation technique can separate:

2 liquids with different boiling points?

• Crystallisation

• Chromatography

• Filtration

• Distillation

Which separation technique can be used to separate:

An insoluble solid from a liquid?

• Crystallisation

• Chromatography

• Filtration

• Distillation