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Science 10: Chemistry > 4.1 > Flashcards

Flashcards in 4.1 Deck (40)
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1

Shell

An area around the nucleus where electrons exist

2

Period

A horizontal row on the periodic table

3

Family

A vertical column on the periodic table

4

Ionic bonding

when one or more electrons transfers from a metal to non-metal

5

Covalent bonding

Chemical bonding that results from a sharing of valence electrons

6

Smallest particle of an element that can exist by itself?

Atom

7

What is responsible for bonding?

Electrons

8

Atoms

Composed of protons and neutrons, and electrons

9

Bohr diagrams

Show the arrangement of protons, neutrons, and electrons in atoms and ions

Shows how many electrons are in each shell surrounding the nucleus

10

Ions

Atoms that have lost or gained electrons

11

Lewis diagrams

Show the arrangement of bonds within compounds by showing only an atoms’s valence electrons and the chemical symbol

12

Compound

A pure substance that is composed of 2 or more atoms combined in a specific way

13

Chemical changes

Changes in the ways the atoms and molecules in a pure substance are arranged

14

Subatomic particles

Particles that make up an atom

15

Relative mass of proton

1836 x more massive than an electron

16

Relative mass of neutron

1837 x bigger than an electron

17

Relative mass of electron

1

Almost 0

18

Who discovered the atom?

Aristotle came up with the idea that stuff is made of small particles called “atoms”.

19

Molecule

2 or more of the same atoms

20

Matter

Anything with mass or volume

21

Nuclear charge

Electric charge
Found by counting number of protons

22

Atomic number

Same as nuclear charge
Same as number of protons

23

Alkali metals

Very reactive

24

Alkali earth metals

Some what reactive

25

Halogens

Very reactive

26

Noble gasses

Very un-reactive gaseous non-metals

27

Transition metals

Families 3-12

28

JJ Thomson

Discovered electrons
Crooks tube/ cathode ray tube
Plum pudding model

29

Ernest Rutherford

Discovered protons
Gold foil experiment
Nuclear model of atom

30

James Chadwick

Discover neutrons