DENSITY Flashcards
What does observation mean?
Noun
The act of attentive watching, perceiving or noticing using our 5 senses (hear, see, feel, smell, taste)
The data measured, collected, perceived or noticed, during an experiment
What does Inference mean?
Noun
A logical conclusion based on observations
The “guess” or “prediction” about what happened or will happen
What is density?
**D = M/V ** Density equals mass over volume
How do you use a triple balance beam?
Put what you what the mass on the metal block
The middle weight is moved 1st and weighs 100g.
The back weight is next and equals 10g.
After that, the front weight is moved and equals 1g.
Finally, you add the numbers up to get the mass.
What are the parts of a triple balance beam?
Pan
Adjustment Knob
Base
Rider - 3 Beams
Pointer
Units of measurement for volume
LIQUID - mL SOLID - cm3
Unit of measurement for mass
g
What is density?
Density is the mass a material has for a certain volume of that material.
Density is a physical property that can be measured. This means it is a quantitative property (property that has number data and can be measured)
Density is helpful when….
Density is a very useful Unique Property for identifying unknown substances
How do we measure density?
We need mass and volume for density:
Mass is the amount of matter in an object.
Mass units are grams (g)
What is matter?
Anything that has mass and occupies a space is called matter
What is volume?
Volume is the amount of space that an object takes up.
Volume units are miliLitres (mL) for liquids and cubic centimetres (cm3 ) for solids.
How do you calculate density?
We calculate density by dividing mass by volume
Density = Mass or D= M
Volume V
Density units are the mass units (g) over the volume units (g/cm3 or g/mL)
What is the formula for volume?
l x w x h
length x width x height
What is the equation for mass and volume?
Mass M=DxV
Volume V=M (volume equals mass divided by density_
D
