Mass
the amount of matter in an object
Mass
what is the SI unit of measuring weight
newtons
cm3 or m3
what is the unit for measuring density ?
grams per cubic centimeter
Pure Substance
If a object measured to be 60 grams on earth what is its mass on the moon
60 grams
Give one instrument used in measuring weight
Spring Scale
list 2 instruments for measuring volume
graduated cylinder & volumetric flask
The density of water is __________gram per cubic centimeter
1
The basic unit from which all matter is made.
atom.
What is the formula for finding density
D= mass/volume
what are some instruments for measuring mass
triple beam balance , analytical balance, home scale
How can you find the volume of an irregular object ?
by displacement ( submerging the object in water in a graduated cylinder)
why is water an exception in density
At 4 degree water has the highest density. below 4 degree its density begins to decrease. All other objects increase in density when temperature becomes lower.
A group of 2 or more atoms joined together
molecule
gram or kilogram
An object has a mass of 70 kg. How much does it weigh in pounds
154 pounds
what is the formula used to calculate volume of a rectangular object
V= L x W x H
Something that sinks in water has a density ________________ than water
greater
A mixture that dissolve completely in one another making it impossible to see different parts.
Homogenous mixture
This does not change because of changes in gravity
mass
why does a hot air balloon rise in the air ?
convert 25 ml to cm3
25 cm 3
what is the relationship between density and temperature?
List 3 ways for separating mixtures
Distillation
Magnet
Evaporation
Sieve