Bonds And Types Of Matter Test Flashcards

1
Q

Anion

A

Negative non metals that gain electrons

Negative ions

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2
Q

Cation

A

Positive metals that lose electrons

Positive ions

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3
Q

Polyatomic ion

A

Many atoms bonded together that all together have a charge

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4
Q

Valence electron

A

Very outermost electrons that interact with other atoms

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5
Q

Ionic bond

A

Between metals and non metals

Electrons Transferred

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6
Q

Covalent bond

A

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

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7
Q

Metallic bonds

A

Between metal and metal

Passing electrons back and forth

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8
Q

Element

A

Pure substance where all atoms are the same

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9
Q

Compound

A

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

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10
Q

Mixture

A

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

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11
Q

Homogeneous

A

Looks all the same

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12
Q

Heterogenous

A

Looks like there is more than one substance

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13
Q

Physical property

A

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

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14
Q

Chemical property

A

Flammability, ability to rust or tarnish ( oxidization)

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15
Q

Physical change

A

Change in shape, size, or state of matter

No new substance or properties( color), dissolve,

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16
Q

Chemical change

A

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

17
Q

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

18
Q

To be stable most atoms need

A

8 electrons In their outermost shell

19
Q

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

A

Hydrogen and helium

20
Q

Chemical bond is when atoms

A

Atoms transfer or share electrons

21
Q

What bond has the arrows

22
Q

What bond uses the circles

23
Q

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

A

When the metal is not in column one or two

24
Q

In a pure substance all molecules are…

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 ```