S3 Chemistry revision

When sugar dissolves in water the sugar is termed

• a solvent

• a solute

• a solution

• insoluble

In the nucleus of a sodium atom we find

• protons only

• protons and electrons

• electrons only

• protons and neutrons

The definition of atomic number is

• the number of electrons in an atom

• the number of protons plus neutrons in an atom

• the number of neutrons in an atom

• the number of protons in an atom

An atom has 6 protons in it. The element is......

• oxygen

• nitrogen

• carbon

• sulfur

An atom has electron arrangement 2,7. The element is ......

• chlorine

• nitrogen

• magnesium

• fluorine

The number of neutrons in this atom is......

• 7

• 8

• 15

• 22

An atom has 11 protons, 12 neutrons. Its nuclide notation is

• 
• 
• 
• 

Isotopes are........

• atoms which differ only in the number of of neutrons

• atoms with same numbers of protons, neutrons and electrons

• atoms which differ only in the number of protons

• atoms which differ only in the number of electrons

Which particle has the same number of electrons as an argon atom? There may be more than one answer

• Na⁺

• K⁺

• Cl ^-

• Cl

Which type of bonding occurs in methane CH₄ ?

• covalent

• ionic

• metallic

• none