Solids, liquids and gases ✓

Question 1

what is the unit for degrees celsius ?

Answer 1

°C

Question 2

what is the unit for degrees kelvin ?

Answer 2

K

Question 3

what is the unit for force ?

Answer 3

N

Question 4

what is the unit for mass ?

Answer 4

kg

Question 5

what is the unit for density ?

Answer 5

kg/m³

Question 6

what is the unit for pressure ?

Answer 6

Pa

Question 7

what is the word equation for density ?

Answer 7

density = mass ÷ area

Question 8

what is the symbol equation for density ?

Answer 8

ρ = m ÷ v

Question 9

what is the word equation for volume of cuboids ?

Answer 9

volume = width x length x height

Question 10

what is the symbol equation for volume of cuboids ?

Answer 10

v = w x l x h

Question 11

what is the word equation for static pressure ?

Answer 11

pressure = force ÷ area

Question 12

what is the symbol equation for static pressure ?

Answer 12

p = F ÷ A

Question 13

where does pressure act in a gas or liquid ?

Answer 13

in all directions

Question 14

what is the word equation to determine the pressure difference at different depths in liquids ?

Answer 14

pressure = height x density x gravitational field strength

Question 15

what is the symbol equation to determine the pressure difference at different depths in liquids ?

Answer 15

p = h x ρ x g

Question 16

what happens when a gas collides with the walls of their container ?

Answer 16

they exert a force

Question 17

because gases exert a force on the walls of their container that else do they exert because of pressure = force ÷ area

Answer 17

they exert pressure

Question 18

if the temperature of a gas increases what happens to the kinetic energy/ speed of the particles ?

Answer 18

the kinetic energy increases and the speed of particles increase as well

Question 19

what is the temperature in degrees equivalent to absolute zero ?

Answer 19

-273°C

Question 20

how do you convert between °C and K ?

Answer 20

add 273°C to the given number to go into Kelvin and minus 273°C to go into celsius

Question 21

what temperature in Kelvin equivalent to absolute zero ?

Answer 21

0°K

Question 22

at absolute zero what happens to the particles ?

Answer 22

they stop moving

Question 23

when absolute zero occurs there is no more…… because the particles stop colliding with the walls of the container ?

Answer 23

pressure

Question 24

for a fixed volume if the temperature increases then so does the pressure, what are the two reasons for this ?

Answer 24

• increased speed of collision with the walls of the container, which means increased force
• increased rate/ frequency of collision with walls of container

Question 25

if doubling the temperature in Kelvin what happens to the pressure ?

Answer 25

it also doubles

Question 26

for a fixed temperature what happens when you halve the volume of the container, to the rate of collision with the walls of the container and the pressure ?

Answer 26

the rate of collision with the walls of the container is doubled and so the pressure is doubled

Question 27

what is precision ?

Answer 27

an indication of the smallest increment that can be measured on an instruments scale

Question 28

what is accuracy ?

Answer 28

an indication of how close a measurement is to its actual value (for the given level of precision)

Question 29

what is temperature ?

Answer 29

the average kinetic energy of the particles

Question 30

what is absolute temperature proportional to ?

Answer 30

the average kinetic energy of particles in a substance

Question 31

what is the arrangement of the particles in a solid ?

Answer 31

• ordered
• touching
• vibrate around a fixed point
• particles can’t move freely

Question 32

what is the arrangement of the particles in a liquid ?

Answer 32

• touching
• not ordered
• particles move freely over one another

Question 33

what is the arrangement of the particles in a gas ?

Answer 33

• spread out
• not touching
• move rapidly

Question 34

what is the equation for doubling the temperature it also doubles the pressure (given in front of exam) ?

Answer 34

P1 x T2 = P2 x T1

P1 ÷ T1 = P2 ÷ T2