# of electrons on the outermost shell

approximation of the total mass

anything that takes up space and has mass

# of electrons needed to fill the outer shell

8 electrons in the valence shell

something that can't be broken more by chemical reactions

center of an atom, tight and dense

matter smaller than atoms (protons, neutrons, and electrons

A substance consisting of two or more elements

Molecular Biology Basics Flashcards

1

Valence Electrons

# of electrons on the first shell
# of electrons on the outermost shell

2

Atomic Mass Number

approximation of the total mass
the number of electrons

3

Matter

something heavy
something in earth's gravity
anything that has matter
anything that takes up space and has mass

4

Atomic Number

the number of neutrons
the number of protons

5

Valence

# of electrons needed to fill the outer shell
# of electrons needed to fill the second shell

6

Octet Rule

7 electrons in the valence shell
8 electrons in the valence shell
27.3 electrons in the valence shell
12 electrons in the valence shell

7

Atom

more tiny dot things
smallest unit of matter
elements
protons, neutrons, and electrons

8

Element

little dot things on periodic table
a substance of two or more different elements
something that can't be broken more by chemical reactions
atoms

9

Atomic Nucleus

made of DNA
center of an atom, tight and dense
nucleus of a cell
super large

10

Electron Energy Shell

stored energy
energy levels at specific distances from the nucleus

11

Subatomic Particles

located in the cytoplasm
have no charge
are bigger than atoms
matter smaller than atoms (protons, neutrons, and electrons

12

Compound

A substance consisting of one element
A substance consisting of two or more elements

Molecular Biology Basics

Questions 12

Molecular Biology Basics

Questions 12