Describing and Classifying Matter
Anything that has mass and takes up space is ____________________
Matter
A single kind of matter that always has a specific makeup, or composition
Substance
The amount of matter in an object
Mass
_______________ is never created or destroyed, it is only transformed.
Energy
What two factors do you need to know in order to calculate density?
Mass and volume
The basic unit from which all matter is made
Atom
A characteristic that can be observed without changing the matter into another type of matter
Physical property
The amount of space that matter occupies
Volume
What is a physical change?
Alters the form or appearance of matter but does not turn any substance in the matter into a different substance
Which of these tools can be used to measure volume of a liquid?
a. graduated cylinder
b. scale
c. triple-beam balance
d. ruler
Graduated cylinder
A group of two or more atoms held together by chemical bonds
Molecule
Characteristic that describes the ability of a substance to become something else
Chemical property
A measure of the force of gravity on an object
Weight
___________________ is the total energy of the motion of all of the particles in an object.
Thermal energy
If an object sinks in water, is it more dense or less dense than water?
More dense
A substance made of two or more elements that are chemically combined in a set ratio
Compound
Made up of two or more substances that are together in the same place, but their atoms are not chemically bonded
Mixture
Objects with greater density will sink in water, while objects with lesser density will _______________-
Float
What is a chemical change?
A change in matter that produces one or more new substances, also known as a chemical reaction
The total amount of atoms before and after a chemical reaction
a. stays the same
b. increases
c. decreases
d. both b and c
Stays the same
How easily a substance dissolves in another substance
Solubility
Involves separating liquids by boiling them, the liquid with the lower boiling point will vaporize first, leaving the other liquid behind
Distillation
Increasing or decreasing the total amount of a given substance will _______________ its density
Not change
What is the law of conservation of mass?
Matter is not created or destroyed in any chemical or physical change, also known as the law of conservation of matter
What is the difference between mass and weight?
Mass is the amount of matter in a substance. Weight is the measure of gravitational force on an object.