Year 10 Chemistry Term 1 Revision

From the table identify which atom's are from the same period of the periodic table.

• I, IV & VI

• I & II

• II & VI

• II, IV & VI

Which is one of the properties of an ionic compound?

• Low melting point

• Soft when solid

• Mostly soluble in water

• Conducts electricity when solid

Which is the correct comparison between covalent molecular (CM) and covalent network (CN) compounds?

• Both CM and CN are soluble in water

• CM are hard solids whilst CN are generally soft

• CM have low low melting point, CN have high melting point

Cations are considered positive because...

• The number of protons and neutrons are the same

• They have lost an electron

• The number of electrons and protons are the same

• They have gained an electron

The correct electron configuration for Argon-18 is...

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2p⁶ 2s²3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p10

• 1s² 2s² 3p⁶ 4s² 5p⁶

Naturally occurring chlorine exists as the two isotopes $_{17}^{35}$  Cl and  $_{17}^{37}$  Cl. This indicates that the two forms of chlorine:

• Have differing numbers of protons

• Both contain 17 neutrons

• Have the same mass number of 17

• Have the same atomic number of 17

What is the correct ionic formula for Aluminium Phosphate.

• Al₄PO

• Al₁PO₄

• AlPO₄

• PO₄Al

What is the correct chemical formula for diphosphorous pentoxide

• P₂O₅

• P2O5

• 2P5O

• P²O⁵

What is the name for the following compound: Fe(NO₃)₂

• Iron Nitrate

• Iron (II) Nitrate

• Iron (III) Nitrate

• Iron (IV) Nitrate

What is the correct balanced equation for the following:

KOH + H₃PO₄ -> K₃PO₄ + H₂O

• KOH + H₃PO₄ -> K₃PO₄ + H₂O

• 3KOH + H₃PO₄ -> K₃PO₄ + H₂O

• KOH + H₃PO₄ -> K₃PO₄ + 3H₂O

• 3KOH + H₃PO₄ -> K₃PO₄ + 3H₂O