Lecture 1: Course Themes Flashcards
1
Q
matter
A
anything that takes up space; made up of elements
2
Q
element
A
a substance that cannot be broken down into other substances by chem rxns
3
Q
elements of life
A
Oxygen, Carbon, Hydrogen, and Nitrogen
4
Q
atom
A
smallest unit of matter
5
Q
subatomic particles
A
neuron (neutral), proton(+), electron(-)
6
Q
atomic number
A
number of protons in nucleus
7
Q
mass number
A
total number of protons and neutrons
8
Q
atomic mass
A
total mass of an atom
9
Q
isotopes
A
different atomic forms of the same element
10
Q
half-life
A
time it takes for 50% to decay
11
Q
energy
A
the capacity to cause change
12
Q
cells
A
most basic units of life that exhibit all properties of life
13
Q
5 traits of Life
A
reproduction, metabolism, evolution, respond to stimuli, death
