Chemistry AQA Topic 1a

What is the relative mass of a neutron?

• 1
• -1
• 0
• 1/2000

What is the relative mass of an electron?

• 1/2000
• 1/200
• 0
• -1

How many atoms are there in a molecule of ethanol (C₂H₆O)

• 9

• 6

• 2

• 8

What is the definition of an element?

• A substance made up of only one type of atom
• A substance made up of only one atom
• Two or more different atoms chemically bonded
• Two or more different substances not chemicall combined

What is the relative atomic mass of lithium?

• 7

• 2

• 4

• 14

What type of substance is shown here?

• Mixture of elements

• Pure element

• Pure compound

• Mixture of compounds

What type of structure is shown here?

• Giant Lattice

• Atom

• Molecule

What best describes this diagram?

• Molecules of an element

• Atoms of an element

• Molecules of a compound
• Ions of an element

What best describes this diagram?

• Molecules of a compound
• Molecules of an element
• Atoms of an element
• A lattice of a compound

To the nearest hundred, how many elements are there on the periodic table?

• 100
• 200
• 300
• 400