Chapter 2: The Chemistry of Life Flashcards
1
Q
Define
Matter
2 Points
2.1
A
- Any substance that has mass and occupies space
- Made of Atoms
2
Q
Define
Atom
1 Point
2.1
A
- The smallest particle a substance can be divided into while keeping its chemical properties
3
Q
Define
Proton
1 Point
2.1
A
- A positively charged subatomic particle
4
Q
Define
Neutron
1 Point
2.1
A
- A subatomic particle with no charge
5
Q
Define
Electron
1 Point
2.1
A
- A negatively charged subatomic particle
- Found in the electron shells
6
Q
Define
Mass
1 Point
2.1
A
- The amount of substance
7
Q
Define
Weight
1 Point
2.1
A
- The force of gravity exerted onto a substance
8
Q
Define
Atomic Number
1 Point
2.1
A
- The number of protons in the nucleus of an atom
9
Q
Define
Element
1 Point
2.1
A
- A subtsance that cannot be broken down into another substance by ordinary chemical means
10
Q
Define
Atomic Mass
1 Point
2.1
A
- The number of protons plus neutrons in the nucleus of an atom
11
Q
Define
Potential Energy
1 Point
2.1
A
- Stored energy that depends on the stresses or position of parts in a mechanism
- Stretched or compressed spring has more potential energy than a neutral sprin
- A ball held high above the earth has more potential energy then one on the ground
12
Q
Define
Electron Shells
1 Point
2.1
A
- The layers or levels of the energy field that surrounds an atoms nucleus
13
Q
Define
Ion
1 Point
2.2
A
- An atom that has gained or lost 1 or more electrons
14
Q
Define
Cation
2 Points
2.2
A
- An atom that has lost an electron
- Positively charged
15
Q
Define
Anion
2 Points
2.2
A
- An atom that has gained an extra electron
- Negatively Charged