Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
matter
|
anything that has mass and takes up space.
|
|
element
|
a substance that cannot be broken downinto any other substances by a chemical or physical means.
|
|
compound
|
A substance made of two or more elements chemically combined in a specific ratio or porportion.
|
|
mixture
|
two or more substances that are mixed together but no chemically combined.
|
|
atom
|
the smallest particle of an element
|
|
scientific theory
|
a well tested idea that explains and connects a wide range of observations.
|
|
model
|
a physical mental visual and othe representaions of an idea to help people understand a concept they cannot observe directly.
|
|
electrons
|
Negatively charged particles that move outside the neucleus of an atom.
|
|
nucleus
|
The central core of the atom containing protons and usually neutrons.
|
|
protons
|
small positively charged particles that are found in the neucleus of an atom.
|
|
energy level
|
The specific amount of enegy an electron has.
|
|
neutrons
|
small uncharged particles that are foundin the neucleus of an atom.
|