Chapter 1 test cards Flashcards
What is a homogeneous mixture?
A mixture where the substances are so evenly mixed that you cannot see the different parts.
What is a chemical change?
When matter changes into one or more new substances.
Other units of volume include…
Milliters and liters
What is a common unit of volume?
Cubic Centimeters
Chemical or Physical?
Ability to tarnish
Chemical
Volume=
LxWxH
What do atoms combine to form?
Molecules
What holds atoms together?
Chemical bonds
A compound may be represented by what?
Chemical formula
Chemical or Physical?
Ability to freeze
Physical
Chemical or Physical?
Color
Physical
Chemical or Physical?
Ability to burn
Chemical
Every chemical or physical change in matter includes a change in what?
Energy
What is a physical property?
A property observed without changing a substance into another substance
What is kinetic energy?
The energy of motion
What is mass?
The measurement of how much matter an object contains
Chemical or Physical?
Ability to rust
Chemical
What is an element?
A pure substance that cannot be broken down into any other substances
In a physical change, matter changes its appearance but doesn’t change into a different what?
Substance
Density=
Mass/Volume
What is an example of a homogeneous mixture?
A solution
What is an atom?
The basic particle that makes up an element
What is electrical energy?
The energy of electrically charged particles moving from one place to another
What is a compound?
A pure substance made of two or elements chemically combined in a set ration
What is temperature?
A measure of a the average energy of a random motion of the particles in the object
Chemical or Physical?
Flexibility
Physical
What is an endothermic change?
A change in which energy is taken in or absorbed
What is a molecule?
Larger particles made up of two or more atoms held together by chemical bonds
