Mrs. Abreu Stem Quiz: Mass, Volume, Density 8th

What is Mass?

• a measurement of how much matter an object contains

• mass changes when the amount of matter changes

Unit for Mass?

gram

formula for mass

Mass = Density × Volume

Instruments used to measure Mass?

electronic scale and tripple beam balance

How to use a Triple Beam Balance?

1. set wait to zero

2. calibrate

3. place object on balance

4. move weights

How to use Electronic Scale?

1. press power (wait)

2. M set scale to grams (0.00g)

3. practice tare

How to complete Tare method on electronic scale?

1. place empty container

2. press T (removes mass of container)

3. add small objects

What is Matter?

any substance that has mass and takes up space by having volume.

What is not Matter?

Any type of energy

ex; Sunlight, Gravity, Heat, Reflection, space, radiation, sound, time, etc.

What is Weight?

a measure of the effect gravity has on an object

How are mass and weight different?

• Mass is the total amount of matter, or "stuff," in an object.

• Weight is the force of gravity on an object.

• Mass always stays the same, but weight can change depending on how much gravity is acting upon an object.

• gravity effects weight not mass

What is Volume?

• a measurement of how much space an object takes up

• An object’s volume is the amount of space it takes up

formula for volume

• m/d

• LxWxH

Unit for Volume?

cm3 - lxwxh

mL - liquids or irregular shapes

Instruments used to measure Volume?

beakers, gradulated cylinder

What is the water displacement method using a graduated cylinder

When a cylinder is submerged in the water it pushes water out of the way. If you measure the amount the water level increases, you can find the volume of the water pushed out of the way.

What is Density?

• a drprived property of matter

• The density of an object is its mass per unit of volume. Dense objects feel very heavy for their size, while objects with low density feel very light for their size.

formula for density

d = m/v

Unit for Density?

g/cm3

What is the Metric System?

• standerize world wild

• The metric system, or more accurately the International System of Units

• meter - length

• liter - volume

• gram - mass

what is water displacement

the volume of an irregular object can be measured by how much water it displaces in a graduated cylinder

the volume of water that is displaced by an object dropped in the water

Does mass alone determine whether an object will float or sink?

The mass alone does not determine whether an object will float or sink because the volume would also be needed.