Solids, liquids and gases

Question 1

density =

Answer 1

mass / volume

Question 2

how will an object float?

Answer 2

if its density is lower than the fluid

Question 3

measurement for density

Answer 3

g/cm³ or kg/m³

Question 4

pressure =

Answer 4

force / area

Question 5

measurement of force

Answer 5

Newtons

Question 6

pressure difference =

Answer 6

height x density x gravity

Question 7

particles will evaporate if…

Answer 7

travelling in right direction
travelling fast enough
near the surface

Question 8

what is proportional to the temp of a gas?

Answer 8

kinetic energy of particles

Question 9

what is Brownian motion?

Answer 9

large, heavy particles can be moved with Brownian motion by smaller, lighter particles travelling at high speeds

Question 10

what is 0 degrees Celsius in Kelvins

Answer 10

273

Question 11

equation when temp is constant

Answer 11

pressure (1) x volume (1) = pressure (2) x volume (2)

Question 12

equation when volume is constant

Answer 12

pressure (1) / temp (1) = pressure (2) / temp (2)

Question 13

measurement of pressure

Answer 13

Pascals (Pa or KPa)