Cambridge Checkpoint Essay

310 Words2 Pages
CAMBRIDGE CHECKPOINT SCIENCE EXERCISE Chapter PARTICLE THEORY (Cambridge Checkpoint Science P1 Specimen 2012_no.2) 1. The diagram shows a balloon containing air. (a) Explain how the air particles exert a pressure on the inside of the balloon. ___________________________________________________________ ___________________________________________________________ (b) The air in the balloon is heated by leaving the balloon in a sunny place. State two effects this has on the air particles. 1. _________________________________________________________ 2. _________________________________________________________ (c) State one way in which the balloon changes when it is left in a sunny place. ___________________________________________________________ (Cambridge Checkpoint Science P1 Specimen 2012_no.9) 2. Ice, water and steam all contain water molecules. Complete these sentences using words from the list. You may use them once, more than once, or not at all. larger than the same as smaller than [2] [2] [1] (a) In steam, the distance between the molecules is ____________________ the distance between the molecules in water. (b) In steam, the forces between the molecules are ____________________ the forces between the molecules in water. (c) In water, the mass of one molecule is ___________________ the mass of one molecule in steam. [1] [1] [1] (Cambridge Checkpoint Science P2 Specimen 2012_no.10) 3. The boxes A, B and C show particles of substances in one of three different physical states: solid, liquid and gas. (a) Write the letter of the box which (i) contains a liquid _________________________________________ (ii) contains particles vibrating about fixed positions ______________ (b) How could the particles in the box you have given in (a) (ii) be made to vibrate more quickly? ____________________________________

More about Cambridge Checkpoint Essay

Open Document