C1

Question 1

Atom

Answer 1

The smallest particle of an element that has the properties of the element

Question 2

Ion

Answer 2

An atom that has gained or lost electrons to get a full outer shell. This makes them more stable, because the number of protons is no longer the same as the number, the ions are charged

Question 3

Molecule

Answer 3

A group of two or more atoms chemically combined to form an identifiable unit which retains the properties and composition of the substance

Question 4

Diffusion

Answer 4

The movement of molecules from an area of high concentration to a low concentration down a concentration gradient as a result of their random movement.

Question 5

Describe solids in terms of particle separation, arrangement, and type of motion

Answer 5

Closely packed together, impossible to compress - Ordered, regular arrangement - Fixed in place and can vibrate.

Question 6

Describe liquids in terms of particle separation, arrangement, and type of motion

Answer 6

Touching, near impossible to compress - No regular arrangement - Can move past one another.

Question 7

Describe gases in terms of particle separation, arrangement, and type of motion

Answer 7

Widely spaced apart. Randomly arranged. Particles move freely.

Question 8

How does a larger molecular mass effect the rate of diffusion?

Answer 8

-Travel slower
-Do not travel as far in the same amount of time

Question 9

How does a smaller molecular mass effect the rate of diffusion?

Answer 9

-Travel faster
-Travel further in the same amount of time

Question 10

What is the basis of the kinetic theory?

Answer 10

When substances are heated, the particles absorb thermal energy which is converted into kinetic energy.