Y9 End of Year Quiz

In which two states are the particles randomly arranged?

• LIquid and solid
• Liquid and gas
• Gas and solid

diffusion occurs in

• liquids
• liquids and gases
• gases
• liquids, gases, solids

Diffusion is the movement of particles from a...

• High concentration to low concentration
• Low concentration to high concentration
• High concentration to high concentration
• Low concentration to low concentration

Diffusion occurs faster...

• in cold water
• in thick fluids like syrup
• when heat is applied

Gas pressure is caused when gas particles...

• move more quickly and spread out.
• move more slowly and come together
• move very quickly and spread out to fill the container
• collide against the walls of the container

In which state are the particles only able to vibrate in a fixed position?

• Solid
• Liquid
• Gas

Relative Atomic Mass

• The mass of yourself compared to all of your relatives
• The mass of a single atom of an element
• The mass of an isotope of an element compares to the mass of all carbon
• The mass of all isotopes of an element relative to the mass of carbon 12

The RAM of Chlorine is 35.5 - which of these isotopes is most abundant?

• A
• B

Copper contains 69.1% copper-63 and 30.9% copper-65. Calculate the RAM of copper.

• 63.1
• 63.6
• 64.2
• 64.6

At what temperature does the solubility of NaCl match the solubility of K₂Cr₂O₇?

• 50 ºC
• 83 ºC
• 30 ºC
• 60 ºC