Unit 2 Flashcards Preview

11 Chemistry > Unit 2 > Flashcards

Flashcards in Unit 2 Deck (28):
1

Define the law or conservation of mass

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

2

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

Coefficients, Law of conservation of mass

3

What are the super seven

Seven elements that are diatomic

4

List the super seven

H O F Br I N Cl

5

Define diatomic

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

6

Define MINOH

Metals
Ions (polyatomic)
Non metals
Oxygen
Hydrogen

7

Lost 5 ways a chemical reaction has occurred

Colour change
Odour
Change in state
Release of energy
Irreversible

8

Combustion:

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

O2 ==> CO2 + H2O

9

Decomposition reaction

A single compound breaks down into elements or simpler compounds

10

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

Thermal decomposition

11

Combustion reaction

The oxide burning carbon produces what?

The oxide burning hydrogen produces what?

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

CO2 (g)

H2O (g)

12

Single displacement

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

13

Define spectator

A passive onlooker that does not participate in the reaction

14

Metals react by losing what

Losing valence electrons

15

The more active metal displaces the less active what

Metal ion

16

Incomplete Combustion:

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

C + CO + CO2 + H2O

17

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

F and H
CO2 H2O

18

Why does incomplete combustion occur

Due to fuel impurities and or oxygen mixtures

19

Hydrocarbons only burn completely with enough what?

O2

20

List 2 covleats for complete combustion

Fuel is pure
Oxygen is pure

21

Define catalyst

Speeds up a reaction but isn't consumed in reaction

22

Bases break apart to form what?

A negatively charged hydroxide

23

An acid dissolves in water because?

It donates hydrogen ions

24

Base = ?

Metal + O2 + H2O

25

Acid = ?

Non metal + O2 + H2O

26

A base turns
Blue litmus
Red litmus
PH
Bromothymol

Blue
Blue
Pink
Yellow

27

An acid turns
Red litmus
Blue litmus
PH
Bromothymol

Red
Red
Colourless
Yellow

28

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

Smaller