year 10 chemistry review

Which subatomic particles have a +1 charge?

• Protons

• Neutrons

• Electrons

• Atoms

What does the atomic number of an element ALWAYS tell you?

• How many neutrons there are in the atom

• The atomic weight of the atom

• How many protons there are in an atom

• How reactive an atom is

When does covalent bonding occur?

• When metals bond together

• When ions bond together

• All the time

• When non-metals bond together

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 Temperatire

• Increasing Surface Area

• Increasing Size of the Beaker

• Increasing Pressure

What is the most correct description of an 'octet' in chemistry?

• Eight of anything

• The number of electrons an atom needs in its valence shell to be happy

• The number of electrons an atom needs in every shell to be happy

• The number of electrons every atom should have

Which statement below most accurately describes covalent bonding?

• The exchange of electrons

• Donation of electrons to a sea of delocalised electrons

• The sharing of electrons

• The disappearance of electrons

What does atomic mass refer to?

• The mass of protons and neutons in an atom

• The number of protons in an atom

• The mass of protons, electrons and neutrons in an atom

• The mass of an atom in grams

Group 1 Metals (The alkali metals) all form an ion with a charge of

• +1

• +2

• -1

• -2

What element is Na ?

• Sodium
• Nanium
• Silicon
• Nastium