Unit 2 VCE Chemistry - Water

What percentage of Earth's water is fresh water?

• 2.5%

• 5%

• 23%

• 90%

The main type of bonding existing between water molecules is................................bonding.

Which of the following are properties of water?

• low boiling point

• high boiling point

• high melting point

• low melting point

What percentage of the Earth's total water is freshwater?

• 2.5%

• 30%

• 50%

• 70%

Which of the following is not a property of water?

• colorless

• odorless

• high freezing point

• tasteless

The specific heat capacity of a substance is a measure of what ?

• a measure of how long it takes for it to change state

• the amount of heat needed to increase the temperature of a certain amount of that substance by 1 degree

• the temperature when it melts

• the amount of energy needed to increase the temperature of a certain amount of that substance by 1 degree

Calculate the amount of energy needed to increase the temperature of 200g of water by 15 degrees?

( specific heat capacity of water= 4.18J/g/C )

• 12.5 kg

• 12500kJ

• 12.5 kJ

• 4.18J

The latent heat of ______of a substance is the energy needed to change 1 mole of that substance from a solid to a liquid at its melting point.

The latent heat of _________of a substance is the heat energy needed to change 1 mole of that substance from a liquid to a gas as its boiling point.

• vaporisation

• fusion

The specific heat capacity of water is relatively high due to ?

• covalent bonding

• hydrogen bonding

• dispersion forces

• metallic bonding