ns practical density

Question 1

Density definition

Answer 1

Amount of mass in a given volume of that material

Question 2

Formula for finding D

Answer 2

D=m/v

Question 3

The bigger the mass=

Answer 3

Bigger density if volume is the same. Because spaces between particles are smaller, particles are more closely packed

Question 4

density of solids, liquids ,gases

Answer 4

Gases are less dense than liquids, liquids are less dense than solids

Question 5

what is an exception?why?

Answer 5

water is an exception as ice is less dense than water and therefore it floats

Question 6

displacement method

Answer 6

First record the starting volume using a measuring jar.Then add the object and record the change in volume =the volume of the irregularly-shaped object

Question 7

why does a steel ship sink in water

Answer 7

due to presence of a lot if air in it, the average density of the ship becomes less than the density of water

Question 8

what does density depend on

Answer 8

it depend on the kind of particles it is made up of and the size of the spaces between them

Question 9

what type of material floats on a liquid

Answer 9

A material which has lower density will float on a liquid which has higher density, for example oil(lower density) will float on water (higher density)

Question 10

all matter has….

Answer 10

mass

Question 11

what is the unit measure of mass

Answer 11

kg and g

Question 12

what is mass measured with

Answer 12

mass meter or electronic scale

Question 13

what is volume

Answer 13

the amount of space an object occupies

Question 14

unit for volume

Answer 14

litre, ml ,cm³ , cubic decimate dm³