Year 10 Chemistry Revision

What is the name of the element with an atomic number of 3?

• Lithium

• Magnesium

• Sodium

• Potassium

The atomic mass of an element tells you

• The number of protons and neutrons

• The number of protons and electrons

• The number of neutrons and electrons

• The number of neutrons only

The atomic number tells you

• The number of electrons

• The number of protons

• The number of neutrons

• The number of nucleons

The electronic configuration of a magnesium ATOM is

• 2, 8

• 2, 8, 3

• 2, 6

• 2, 8, 2

The electron configuration of a magnesium ION is

• 2, 8, 6

• 2, 8, 8

• 2, 8, 2

• 2, 8

Elements from groups 1-3

• Are metals and lose electrons in a chemical reaction to become CATIONS

• Are metals and lose electrons in a chemical reaction to become ANIONS

• Are metals and gain electrons in a chemical reaction to become CATIONS

• Are metals and gain electrons in a chemical reaction to become ANIONS

Which element has an electronic configuration of 2, 7

• Chlorine

• Bromine

• Fluorine

• Iodine

Phosphorus does the following in a chemical reaction

• LOSES 3 electrons to become an ANION

• LOSES 3 electrons to become a CATION

• GAINS 3 electrons to become a CATION

• GAINS 3 electrons to become an ANION

When lithium and potassium react, they would undergo which type of bonding

• Ionic

• Metallic

• Covalent

• Diamagnetic

When hydrogen and sulfur react together, they undergo which type of bonding?

• Metallic

• Ionic

• Teronic

• Covalent