Bonds And Types Of Matter Test Flashcards Preview

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Flashcards in Bonds And Types Of Matter Test Deck (39):
1

Anion

Negative non metals that gain electrons
Negative ions

2

Cation

Positive metals that lose electrons
Positive ions

3

Polyatomic ion

Many atoms bonded together that all together have a charge

4

Valence electron

Very outermost electrons that interact with other atoms

5

Ionic bond

Between metals and non metals
Electrons Transferred

6

Covalent bond

Between non metals and non metals or between hydrogen and non metals
Sharing valence electrons

7

Metallic bonds

Between metal and metal
Passing electrons back and forth

8

Element

Pure substance where all atoms are the same

9

Compound

Pure substance, all molecules are the same but each has more than one type of atom

10

Mixture

Two or more different substances, more than one type of piece, not chemically bonded

11

Homogeneous

Looks all the same

12

Heterogenous

Looks like there is more than one substance

13

Physical property

Density, color, boiling point, shape, magnetism l, solubility (dissolve),

14

Chemical property

Flammability, ability to rust or tarnish ( oxidization)

15

Physical change

Change in shape, size, or state of matter
No new substance or properties( color), dissolve,

16

Chemical change

Change into a new substance, new color, bubbles, tastes different, broken bonds

17

Atoms gain, lose, or share electrons in order to become....

Stable

18

To be stable most atoms need

8 electrons In their outermost shell

19

The only two elements that need 2 electrons to be stable are

Hydrogen and helium

20

Chemical bond is when atoms

Atoms transfer or share electrons

21

What bond has the arrows

Ionic

22

What bond uses the circles

Covalent

23

When do you add the Roman numeral numbers when writing the name of each compound

When the metal is not in column one or two

24

In a pure substance all molecules are...

The same

25

A pure substance is an

Element

26

If each piece is made of different atoms bonded together then the pure substance is called...

A compound

27

When two elements are combined together by a chemical bond the properties of the compound are

Completely different than the properties if the pure elements

28

What happens when two substances are combined in a mixture

You don't get any new properties

29

What is a negative ion

Anion

30

What is a positive ion

Cation

31

What is ammonium

NH4
Cation

32

What is hydroxide

OH-
Anion

33

Mixtures can only be broken down by

Physical means

34

Compounds can only be broken down by

Chemical means

35

Elements can only be broken down by

Can't be broken down

36

Endothermic

Takes energy in

37

Exothermic

Gives off energy

38

Non polar bond

Covalent bond
If electrons are shared equally then the molecule that is formed is neutral

39

Polar bonds

Covalent bond
Have poles ( one side of the molecule is different than the other, when one atom pulls harder on the electrons the the electron spends more time near that atom so that end is slightly negative