Basic Physics Flashcards
What is science?
The use of knowledge in an organized and classified manner
What is natural science?
The study of the universe and its contents
What 2 categories can natural sciences be divided into?
Physics and biology
Define physics
Study of nonliving matter
Define biology
Study of living matter
What is matter?
Substance that comprises all physical objects (anything that has mass and occupies space— all physical things)
What is matter comprised of?
Very small particles known as atoms
What is mass?
Matter is mass - quantity of matter contained in an object
What is weight?
Force that an object exerts under the influence of gravity?
What is substance?
A material that has a definite and constant composition
Simple substances are called…
Elements
Complex substances are called…
Compounds
What forms a mixture?
2 or more substances together
What is the structure of matter?

Elements cannot…
Be broken down into any simpler substance
How many elements are naturally occurring and how many elements are created in a lab?
92 naturally occurring elements
18 elmements created in the lab
What is a compound?
2 or more elements chemically united
What is an atom?
Smaller divided part of matter than can enter into combinations or chemical reactions with other atoms
What is a molecule?
2 or more atoms chemically united
Define energy
The ability to do work
What is radiation?
When energy is emitted and transferred through matter
Heat and light can radiate by…
Glowing
Ancient Greeks thought only these 4 things existed.
- Water
- Earth
- Fire
- Air
What did Dalton do in the early 1800s?
Separated elements based on mass















