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;
17 Cards in this Set
- Front
- Back
matter
|
anything that has mass and takes up space
|
|
atoms
|
the basic building blocks of matter
|
|
nucleus
|
the center of an atom; in biology, this is also the center of the cell that holds the DNA
|
|
protons
|
small, positively charged particles found in the nucleus of an atom
|
|
neutrons
|
small, neutrally charged particles found in the nucleus of an atom
|
|
electrons
|
small, negatively charged particles found in the area around the outside of the nucleus of an atom
|
|
model
|
an explanation or representation of something that cannot be seen. Well, actually sometimes it can be seen, but it is a representation of what the object actually is.
|
|
Bohr model
|
A model of the atom which shows the nucleus in the center and the electrons whirling in circular orbits.
|
|
element
|
a pure substance in which all atoms contain the same number of protons
|
|
C
|
symbol for carbon
|
|
N
|
symbol for nitrogen
|
|
H
|
symbol for hydrogen
|
|
P
|
symbol for phosphorus
|
|
O
|
symbol for oxygen
|
|
S
|
symbol for sulfur
|
|
molecules
|
chemicals that result from atoms linking together
|
|
chemical formulas
|
abbreviations for chemical molecules
|