Molecules And Matter

Question 1

What is density and how is it calculated

Answer 1

a measure of how tightly the mass of an object is packed into the space it takes up, it is calculated by dividing the mass of an object by its volume

Question 2

What is the unit for density

Answer 2

Kg/m3 and g/cm3

Question 3

What are the three states of matter and how do they differ

Answer 3

Solid, liquid and gasses. Solids have a fixed shape and volume, it particles vibrate on the spot, liquids have a fixed volume but take the shape of their container and gases have neither a fixed shape nor volume and expand to fit their container

Question 4

What and how does internal energy relate to the states of matter

Answer 4

The energy stored by the particles of a substance is called the substances internal energy it changes during changes of state as heat is either added or removed affecting the motion and arrangement of particles within the substance

Question 5

Gas to solid

Answer 5

Deposition

Question 6

Solid to gas

Answer 6

Sublimation

Question 7

What is latent heat

Answer 7

Energy transferred to a substance when is changes state