Science 7 –
Chemistry – Mass and Volume
1. What is the definition of matter?
Matter
is anything that has mass and occupies space.
2. What is mass?
Does a substance’s mass ever change?
Mass
is an object that measures the amount of matter in another object. No, an
object’s mass stays constant everywhere in the universe.
3. How is mass measured?
When
you measure the mass of an object on a balance or a scale, you are measuring
the mass directly. Mass is measured by the formula, Mass of water = (mass of
container + water) – mass of container.
It is measured in milligrams, grams and kilograms.
4. What is the difference between volume and
mass?
Volume
is a measure of the amount of space that is occupied by matter. Mass of
an object is a measure of the amount of matter in the object.
5. What do you use to measure the volume of a
liquid?
You
use a graduated cylinder which is a tall, narrow container with a scale of
numbers on the side to measure the volume of a liquid.
6. What is the formula for calculating the
volume of a rectangular solid?
The
formula for calculating the volume of a rectangular solid is:
Volume
= length x width x height.
7. How is it possible to measure the volume of
an irregular solid?
It
is possible to measure the volume of an irregular solid by putting the
irregular solid in a graduated cylinder the right size it will fit in and
measuring the displacement of water.
8. What is an everyday situation in which
measuring mass and volume is important?
An
everyday situation in which measuring mass and volume is important is when
taking medication for a cold would help you to know how much of a dosage to
take. Another situation could be when
you are cooking baking.
