FB Chapter 2: The Chemistry of Life: The Study of Life

Foundations of Biology chapter 2

13 cards   |   Total Attempts: 182
  

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Matter
Occupies space; has mass
Mass
Similar to weight; the amount of matter that an object represent
Weight
The effect of gravity on mass
Element
Can NOT be broken down by normal chemical reactions
Compound
Two or more elements combined in a fixed ratio; for example H2O
Is molecular oxygen and hydrogen considered a compound?
No- a compound is two or more elements
Mixture
Elements or compounds mixed but without chemical reaction
Atoms
A fundamental unit of matter
Subatomic particles
Answer 9
What is inside an atom
Which elements are the most important in biological systems?
C Carbon 6
H Hydrogen 1
N Nitrogen 7
O Oxygen 8
What do atoms look like?
Answer 11
The inside of the atom has shells, electrons, protons and neutrons
Atomic Number
The number of protons in the nucleus
Atomic Weight
The number of protons+ the number of neutrons in the nucleus of the atom