vocabulary
volume
The amount of space an object occupies
What does it measure and what tool do we use?
meters
measures length and we use a ruler
What does it mean that something is dense?
that it has a lot of mass for it's volume(it will sink)
What is an atom?
The smallest particle of matter
If a bead sinks in water, is it more or less dense than the water?
more dense
Weight
the downward pull on an object due to gravity
What does it measure and what tool do we use?
grams
measures mass, and we use a balance
calculate the volume if the mass is 12 g and the density is 3 g/ml
4 ml
What is the nucleus of an atom made out of?
protons and neutrons
What is the difference between mass and weight?
mass is just the amount of matter, and weight is the forcce of gravitational pull
density
measure of an object's mass per volume
cm3 or ml measure...
volume
calculate the mass if the density is 3 g/ml and the volume is 5 ml
15 g
What is the charge of a proton? Where is it?
It has a postive charge and is in the nucleus
What is the volume of a box that has a length of 3 cm, a width of 4 cm and a height of 2 cm?
24 cm3
Matter
anything that has mass and takes up space
What is the measurement for density
g/ml or g/cm3
calculate the density of a box that's 2 cm x 2 cm x 2 cm if the mass is 16 grams.
2 g/cm3
What is the charge of a neutron? Where is it?
It has no charge (neutral) and is in the nucleus
When would you use water displacement to find the volume of an object?
If it is irregularly shaped (doesn't have straight sides you can measure with a ruler)
mass
the measure of the amount of matter an object contains
What would you use water displacement in a graduated cylinder to measure? how would you do it?
Use it to measure the volume of an object.
Subtract the measurement of the water without the object from the water with the object in it.
calculate the mass of 8 ml of a liquid if the density is 4 g/ml
32 g
What is the charge of a electron? Where is it?
It has a negative charge and is in a cloud around the nucleus
Are there more electrons or protons in most atoms?
There should be the same amount.