Chemistry C1

Question 1

describe particles in a solid

Answer 1

particles only vibrate about a fixed position

Question 2

describe particles in a liquid

Answer 2

particles can move around each other, collide often

Question 3

describe particles in a gas

Answer 3

particles move freely and in all directions, collide less often than in liquid

Question 4

explain what happens to temperature during melting

Answer 4

the temperature stays constant as energy is used to weaken intermolecular forces

Question 5

explain what happens to temperature during boiling

Answer 5

the temperature stays constant as energy is used to break intermolecular forces

Question 6

describe an atom

Answer 6

the smallest part of an element

Question 7

describe a molecule

Answer 7

a group of atoms covalently bonded together

Question 8

describe an ion

Answer 8

a charged particle

Question 9

describe diffusion

Answer 9

the process by which different substances mix as a result of the random motions of their particles