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Science Exam GR 9 > Chemistry > Flashcards

Chemistry Flashcards

(62 cards)

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1
Q

*REVEIW HOW TO COUNT ATOMS IN COMPOUNDS AND MOLECULES*

A
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2
Q

*REVIEW HOW TO BULID IONS*

A
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3
Q

*REVIEW HOW TO DRAW BOHR-RUTHERFORD DIAGRAMS*

A

.

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3
Q

*REVIEW HOW TO DRAW MOLECULAR AND IONIC COMPOUNDS*

A
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4
Q

*REVIEW HOW TO DRAW STRUCTURAL DIAGRAMS*

A
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5
Q

*REVIEW HOW TO RENAME COMPOUNDS USING THE “CRISS CROSS RULE”*

A

.

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6
Q

Anion

A

Negative Ion

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7
Q

Atom

A

Smallest particle of matter

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8
Q

Atomic Mass

A

Tells the mass of an element. Equal to the sum of the protons and neutrons

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9
Q

Atomic number

A

Equal to the number of protons and electrons in one atom of that element

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10
Q

Cation

A

Positive Ion

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11
Q

Chemical Change

A

When the original substance is changed into a new one

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12
Q

Chemical Property

A

Characteristic behaviors that occur when two substances react to form a new one

Example: Hydrogen and Oxygen react to from water

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13
Q

Coeffcient

A

The number in-front of the formula

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14
Q

What are the equations to calculate volume, density and mass? (Triangle)

A

Density: Mass/ Volume

Volume: Mass/ Density

Mass: Density x Volume

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14
Q

Compound

A

Pure substances containing two or more types of atoms chemically bonded together

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15
Q

Element

A

A pure substance, found on the periodic table

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16
Q

Group

A

The columns on the periodic table

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17
Q

Heterogeneous Mixture

A

A mixture that you can see two or more phases throughout

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18
Q

Homogeneous Mixture

A

A mixture in which you can only see one phase throughout

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19
Q

How can u tell by what coloumn an element is in how many electrons are on its outer valence?

A

The group number. When it reaches the teens, it becomes the second number

Example: 17 has 7 electrons in the outer valence

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20
Q

If an atom gains 2 electrons to become stable it’s charge is…

A

-2

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21
Q

If an atom looses 6 electrons to become stable, it’s charge is…

A

+6

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22
Q

Ion

A

An atom that has gained or lost electrons to form a charged particle

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22
Ionic Compound
A compound made of a metal and a non-metal
23
Matter
Anything that takes up space and has a mass
24
Mechanical Mixture
A heterogeneous mixture that can be seperated through mechanical means
25
Mixture
Made up of two or more types of particles
27
Molecular Element
A molecule that is made up of two atoms of the same element HOBrFINCI Example: Cl2, Br2
28
Molecular/ Covalent Compound
A compound form by two or more non-metals
29
Molecule
Two or more atoms joined together by a chemical bond
30
Neutron
Uncharged subatomic particle
31
What are the 5 rules of the *Particle Theory*?
1) Different substances are made up of different types of particles 2) Particles are in constant random motion 3) All matter is made up of tiny particles, with small spaces in between them 4) Particles move faster as temperature increases 5) Particles attract eachother
32
Period
The rows on the periodic table
33
Physical Change
A change in the form or state of a substance without forming a new one
33
Physical Property
Chacteristics that help to identify a substance Example: 5 Senses
34
Polymer
A type of plastic
35
Proton
Positive subatomic particle
36
Pure Substance
Made up of only one type of particle
37
Stable Atom
The valence shell of the atom is full
38
Subscript
The small number that indicated how many there are of that element
39
Valence
The outer most shell of an atom
40
What are 3 physical properties common to all metals?
1) Shiny, silver or grey 2) Malleable and ductile 3) Solid at room temperature ( Except Mercury)
42
What are the 2 rules to remember when finding the number of protons, neutrons and electrons?
1) The atomic number of the element, protons and electrons are all the same 2) Neutrons are found by subtracting the atomic number of the element from the atomic mass
42
What are the 3 characteristics of chemical properties?
1) Combustibility 2) Reaction with acid 3) Corrosion
43
What are the 3 states of matter?
Solid, liquid and gas
44
What are the 3 subatomic particles?
Protons, Neutrons and Electrons
46
What are the 6 changes of state?
1) Pure Substance 2) Mixture 3) Element 4) Compounds 5) Homogeneous Mixture 6) Heterogeneous Mixture
46
\*WORKSHEET\* Where are the 11 different groups of elements? What are they called?
47
What are the 7 Characteristics of physical properties?
1) State of matter 2) Hardness 3) Malleability 4) Melting and boiling points 5) Crystal form 6) Solubility 7) Viscosity
48
What are these groups ability to react with other elements? -Alkali Metals - Halogens - Noble Gases
Alkali Metals: Forms Compounds Halogens: React With Alkali Metals Nobel Gases: Don't Form Compounds
50
What does a standard notation contain?
The Atomic Mass and Atomic Number on Top of and Below The Element Symbol
50
What do all the columns on the periodic table have in common?
The same number of electrons on the outer valence
51
What particles make up most of the mass of an atom?
Protons and Neutrons (Nucleus)
52
What size are Electrons?
Very small
53
Where are electrons found in an atom?
On the atoms rings
55
Where are neutrons found in an atom?
In the nucleus
57
Where are protons found in an atom?
In the nucleus
59
Which particles take up most of the space in the atom?
Protons and Neutrons
60
Which subatomic particle is positive? Neutral? Negative?
Positive: Protons Neutral: Neutrons Negative: Electrons
61
Who first arranged the table of elements? How?
Dimitri Mendeleev By Chemical Properties
62
What are the 5 clues of a chemical change?
1) New colour 2) Heat or light is given off 3) Bubbles or Gas form 4) Precipitate (Solid) is formed 5) The change is diffucult to reverse

Science Exam GR 9 (4 decks)

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