Science 9: Unit 2 - Matter and Chemical Changes

2

W H M I S.

1

H H P S

2

HHPS has ( several different shapes, only one shape ) and WHMIS has ( only one shape, several different shapes ).

2

Triangle - ( Caution, Warning, Danger )
Diamond - ( Warning, Caution, Danger )
Octagon - ( Danger, Warning, Caution )

1

M S D S

2

Check all that are safety equipment/ protocol for use in labs:

2

To safely heat a liquid, have the tube facing ( away from, towards ) you and heat from ( below, above ). But, soaking the tubes in ( hot, cold ) water works ( better, worse ).

1

Solid -> ( Melting, Freezing, Boiling ) -> Liquid
Liquid -> ( Freezing, Melting, Condensing ) -> Solid

Liquid -> ( Evaporation/ Boiling, Melting/ Liquefication, Sublimation/ Deposition ) -> Gas
Gas -> ( Condensation, Evaporation, Melting ) -> Liquid

Solid -> ( Sublimation, Melting, Boiling ) -> Gas
Gas -> ( Deposition, Freezing, Decomposition ) -> Solid

1

Matter - Anything that has ( mass, energy, physical form ) and ( takes up space, lives, has a definite volume ).

1

Matter is made up of __________.

1

Pure Substances are made up of ____________.

2

Check all that are examples of Pure Substances:

1

Some examples of Mixtures are: solutions, mechanical mixtures, suspensions and colloids.

2

Check all that are examples of Mixtures:

3

Solutions - ( homogeneous, heterogeneous )
Mechanical mixtures - ( heterogeneous, homogeneous )

Suspension looks cloudy and has ( visible, microscopic ) particles, while colloids have ( microscopic, visible ) particles.

3

Properties are characteristics that describe a ( substance, element, solid ).
Physical properties are characteristics that describe a substance's ( physical appearance, chemical composition, atomic composition ).
Chemical properties are characteristics that describe how a substance ( interacts with other substances, change in state, physically ).

2

Check all that are physical properties:

2

Check all that are chemical properties:

1

A Coke and Mentos experiment is a chemical change.

3

Physical Change - A ( substance changes, new substance is formed ) ( form, chemical composition ) but not it's ( chemical composition, form, visible form ).
Chemical Change - A ( new substance is formed, substance changes ) because of the change in ( chemical composition, form ).

2

Check all that are indicators of chemical change:

1

Bananas sitting on the counter over time - ❌
Cutting paper - ❌
Candle burning - ❌
Melting ice - Physical change

Chemical change

New substance is formed

Physical Change

Chemical Change

Physical change

1

We use a _____ when we want to see if there are chemicals present.

2

Check all that are examples of tests that identify chemicals:

1

Reactants are the substances ( used to make, is made by ) the ( product, compound ).

Products are the new substance ( made by the, used to make ) reactants.

1

Hydrogen(2) + Oxygen -> Water
(( reactants, products )) -> (( products, reactants ))

*The arrow always points to the ( products, reactants )

1

Convert this to a word equation(with capital words at the beginning):

FeS + HCl -> FeCl2 + H2S

+ -> +

1

Convert this to a formula equation(use "(2)" for subscripts and "2" for coefficients)(don't balance the equation):

Lithium Chloride + Magnesium Oxide <- Magnesium Chloride + Lithium Oxide

<-

1

Who came up with the Law of the Conservation of Mass?

1

In an ( open, closed ) system, the product can lose mass.

In a ( closed, open ) system, the product can't lose mass.

1

Rewrite the equation but make it balanced(Write "x" for coefficients, and "(x)" for subtext)

Fe + O(2) -> Fe(3)O(4)

+ ->

2

Some sugar(60g) and water(100g) are mixed together. The product is g.

Vinegar(50g) and Baking Soda(40g) mix together and create gas that weighs 10g. It mixes in an open system. What is the leftover product's mass? g.

2

Check all that are factors that affect rate of reaction:

2

If the temperature is ( higher, lower ), the rate of reaction increases.
If the concentration is ( lower, higher ), the rate of reaction decreases.
If the surface area is higher, the rate of reaction ( increases, decreases ).

3

( Aristotle, Leucippus, Democritis ) - Four elements: earth, air, fire and water
Boyle - ( Small, Large ) particles, ( different, same ) sizes
Dalton - Coined "( atom, particle, molecule )", ( Billiard Ball, Plum Pudding ) Model(atoms were different sizes)
( Bohr, Rutherford ) - Electrons move in paths and can change paths
( Rutherford, Bohr ) - Nucleus has ( positive, negative ) charge, electrons float around, atoms mainly ( empty space, nucleus, electrons )
( Canadian, American ) Contributions - Thorium and ( gas, solid, liquid ) Radon
Mendeleev - Came up with the ( modern, best, least accurate ) periodic table

1

There's the same amount of electrons as neutrons in an atom.

3

The atomic number is the number of ( protons, neutrons, electrons ).

( Atomic Mass, Atomic Number, Number of Neutrons ) - ( Atomic Number, Atomic Mass, Number of Neutrons ) = ( Number of Neutrons, Atomic Number, Atomic Mass )

Atomic Number = ( Number of protons and electrons, Number of protons, Number of electrons )

3

Label the Parts of an Atom:

1

Amount of Electrons per Valence Shell(max):

1st Shell -
2nd Shell -
3rd Shell -
4th Shell -

1

The ion charge is determined by the number of electrons in the Valence Shells.

1

Protons ( >, < ) Electrons = Positively charged ion
Electrons ( >, < ) Protons = Negatively charged ion

1

Who invented the Periodic Table that we use today?

3

Name these Atomic Symbols:

K -
Fe -
Cu -
Ag -
Al -
Au -
Hg -
O -
N -
C -
H -
Na -

1

The original elements use their ( Latin, English ) names, while more recent ones use ( English, Latin ) names.

1

The horizontal rows are called ( periods, families, layers ) and there are ( 7, 9, 6, 10 ) of them.
The vertical columns are called ( groups, periods, walls ) and there are ( 18, 19, 23, 16 ) of them.

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Mendeleev had predicted spots for unknown elements on the periodic table.

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Check all that are properties of metals:

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Check all that are properties of non-metals:

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Metalloids have ____ properties.

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Chemical Name = Word Name (use "(2)" for subscripts)

NaCl =
= Carbon Dioxide
Al(2)O(3) =

1

Aq -
G -
L -
S -

1

Cation - ( Positive, Negative ) charge
Anions - ( Negative, Positive ) charge

1

To Name an Ionic Compound:

Name the ( cation, anion ) by its element's name. Name the ( anion, cation ) but add "( ide, ion, ite, ibe )" to the end

1

Anions - ( Nonmetals, Metals )
Cations - ( Metals, Nonmetals )

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Check all that are properties of an Ionic Compound:

1

What is this compound? Is it Ionic or Molecular?

1

In ball-and-stick diagrams, the ( nonmetals, metals ) are always attached to the ( metals, nonmetals ).

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Check all that are properties of a Molecular Compound:

1

Ionic Compounds have ( ionic, molecular ) bonds.
Molecular Compounds have ( covalent, molecular, ionic ) bonds.

1

Polyatomic Ions are a group of atoms that together carry a ( single, double ) charge. Behaves as ( one, two, three ) ion.

3

Types of Reactions:
Exothermic - Energy is ( released into, absorbed from ) the environment, causing it to ( heat up, cool down, evaporate, condense ).
Endothermic - Energy is ( absorbed from, released into ) the environment, causing it to ( cool down, heat up, evaporate, condense ).

1

Hey so this is the unit I learned first and my unit exam is coming up soon.

Science 9: Unit 2 - Matter and Chemical Changes

W H M I S.

H H P S

HHPS has several different shapes only one shape( several different shapes, only one shape ) and WHMIS has only one shape several different shapes( only one shape, several different shapes ).

Triangle - Caution Warning Danger( Caution, Warning, Danger ) Diamond - Warning Caution Danger( Warning, Caution, Danger ) Octagon - Danger Warning Caution( Danger, Warning, Caution )

M S D S

Check all that are safety equipment/ protocol for use in labs:

To safely heat a liquid, have the tube facing away from towards( away from, towards ) you and heat from below above( below, above ). But, soaking the tubes in hot cold( hot, cold ) water works better worse( better, worse ).

Matter - Anything that has mass energy physical form( mass, energy, physical form ) and takes up space lives has a definite volume( takes up space, lives, has a definite volume ).

Matter is made up of __________.

Pure Substances are made up of ____________.

Check all that are examples of Pure Substances:

Some examples of Mixtures are: solutions, mechanical mixtures, suspensions and colloids.

Check all that are examples of Mixtures:

Check all that are physical properties:

Check all that are chemical properties:

A Coke and Mentos experiment is a chemical change.

Check all that are indicators of chemical change:

HHPS has ( several different shapes, only one shape ) and WHMIS has ( only one shape, several different shapes ).

Triangle - ( Caution, Warning, Danger )
Diamond - ( Warning, Caution, Danger )
Octagon - ( Danger, Warning, Caution )

To safely heat a liquid, have the tube facing ( away from, towards ) you and heat from ( below, above ). But, soaking the tubes in ( hot, cold ) water works ( better, worse ).

Matter - Anything that has ( mass, energy, physical form ) and ( takes up space, lives, has a definite volume ).

Bananas sitting on the counter over time - ❌
Cutting paper - ❌
Candle burning - ❌
Melting ice - Physical change

Reactants are the substances ( used to make, is made by ) the ( product, compound ).

Products are the new substance ( made by the, used to make ) reactants.

Hydrogen(2) + Oxygen -> Water
(( reactants, products )) -> (( products, reactants ))

*The arrow always points to the ( products, reactants )

Convert this to a word equation(with capital words at the beginning):

FeS + HCl -> FeCl2 + H2S

+ -> +

Convert this to a formula equation(use "(2)" for subscripts and "2" for coefficients)(don't balance the equation):

Lithium Chloride + Magnesium Oxide <- Magnesium Chloride + Lithium Oxide

<-

In an ( open, closed ) system, the product can lose mass.

In a ( closed, open ) system, the product can't lose mass.

Rewrite the equation but make it balanced(Write "x" for coefficients, and "(x)" for subtext)

Fe + O(2) -> Fe(3)O(4)

+ ->

Some sugar(60g) and water(100g) are mixed together. The product is g.

Vinegar(50g) and Baking Soda(40g) mix together and create gas that weighs 10g. It mixes in an open system. What is the leftover product's mass? g.

If the temperature is ( higher, lower ), the rate of reaction increases.
If the concentration is ( lower, higher ), the rate of reaction decreases.
If the surface area is higher, the rate of reaction ( increases, decreases ).