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11 Chemistry > Unit 2 > Flashcards

Unit 2 Flashcards

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1
Q

Define the law or conservation of mass

A

The total mass of the reactants is equal to the total mass of the products

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2
Q

When using a skeleton equation, add __ in front of the formulas following the ?

A

Coefficients, Law of conservation of mass

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3
Q

What are the super seven

A

Seven elements that are diatomic

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4
Q

List the super seven

A

H O F Br I N Cl

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5
Q

Define diatomic

A

Elements that exist as 2 identical atoms bonded covalently to each other

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6
Q

Define MINOH

A 
Metals
Ions (polyatomic)
Non metals
Oxygen
Hydrogen
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7
Q

Lost 5 ways a chemical reaction has occurred

A 
Colour change
Odour
Change in state
Release of energy
Irreversible
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8
Q

Combustion:

C(x)H(y) + ____ ==> ?

A

O2 ==> CO2 + H2O

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9
Q

Decomposition reaction

A

A single compound breaks down into elements or simpler compounds

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10
Q

If heat is required for decomposition, what is it called?

A

Thermal decomposition

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11
Q

Combustion reaction

The oxide burning carbon produces what?

The oxide burning hydrogen produces what?

A

Reaction of a substance with oxygen to produce oxides + heat + light

CO2 (g)

H2O (g)

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12
Q

Single displacement

A

Element reacts with a compound to form a new element and new compound

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13
Q

Define spectator

A

A passive onlooker that does not participate in the reaction

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14
Q

Metals react by losing what

A

Losing valence electrons

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15
Q

The more active metal displaces the less active what

A

Metal ion

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16
Q

Incomplete Combustion:

C(x)H(y) + O2 ==> ?

A

C + CO + CO2 + H2O

17
Q

If the fuel is a hydrocarbon (_ & _ only) the oxides are what?

A

F and H

CO2 H2O

18
Q

Why does incomplete combustion occur

A

Due to fuel impurities and or oxygen mixtures

19
Q

Hydrocarbons only burn completely with enough what?

A

O2

20
Q

List 2 covleats for complete combustion

A

Fuel is pure

Oxygen is pure

21
Q

Define catalyst

A

Speeds up a reaction but isn’t consumed in reaction

22
Q

Bases break apart to form what?

A

A negatively charged hydroxide

23
Q

An acid dissolves in water because?

A

It donates hydrogen ions

24
Q

Base = ?

A

Metal + O2 + H2O

25
Q

Acid = ?

A

Non metal + O2 + H2O

26
Q 
A base turns 
Blue litmus 
Red litmus 
PH 
Bromothymol
A

Blue
Blue
Pink
Yellow

27
Q 
An acid turns 
Red litmus 
Blue litmus
PH 
Bromothymol
A

Red
Red
Colourless
Yellow

28
Q

The more reactive the element the smaller or larger the electronegativity value

A

Smaller

11 Chemistry (3 decks)

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