Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Test Flashcards > Chemistry Unit test > Flashcards

Chemistry Unit test Flashcards

1
Q

What is a Element?
What is a Compound?
What is a Molecule?

A
  • Element is a pure substance that cannot be further broken down
  • Compound is a pure substance made up of two or more atoms chemically bonded together.
  • A molecule is a particle made up of two or more of the same element.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is a diatomic element, whats the acronym

A

A diatomic element is an element that needs to be in pairs to be more stable. HOFBrINCl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is an ionic compound? What is a molecular compound? HWat type of bond does a molecular compound form?

A

An ionic compound is formed when a metal and non metal transfer valence electrons. A molecular compound is when two or more non-metals share electrons. This forms a covalent bond.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which of these is the correct name for the molecular compound : SF6

A
  • Monosulfur hexafluordie
  • Sulfur Hexafluoride
  • Sulfur Fluoride
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the chemical formulas for these acceptions.
1 Hydrogen Peroxide 2 Water 3 Ozone 4 Methane 5 Ammonia 6

A
  1. H2O2 2. H2O 3. O3 4. CH4 5. NH3
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the five indicators of a chemical reaction?

A

Colour change
Bubbling occurs
Heat or Light is given off or absorbed
A precipitate (solid) forms when two liquids are mixed.
Difficult to reverse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the number used to balance a reaction called?

A

A coefficient

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the law concervation of mass?

A

The law concervation of mass states that no atoms can be created nor destroyed in a reaction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a ion?

A

A charged atom that has given or taken electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A atom that GIVES electrons becomes a ______ charged ion
A atom that TAKES electrons becomes a _______ charged ion

A

positivly
negativly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

In an ionic compound the metal _____ the electrons
In an ionic compound the non metal _______ the electrons

A

Metal gives
Non metal takes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

These ions form ___________ ___________

A

Crystal Structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Can ionic compounds be reduced?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a multivalent element?

A

An element that can have more than one charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the type of chemical reactions?

A

Combustion
Single displacement reaction
Double displacement reaction
Decomposition
Synthesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What three things do combustion reactions require?

A

Fuel (HydroCarbon) - Heat - Oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the two products of combustion reaction?

A

CO2 and water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is a synthesis reaction?

A

When the product is the reactants added together

19
Q

What is a decomposition reaction?

A

When a compound is seperated into its components

20
Q

WHat are the two exceptions for decompostition reactions?

A

Carbonates decompose into CO2 and metal oxide
Chlorates decompose into oxygen gas and metal chloride

21
Q

A metal needs to be _______ on the activity series from the metal in the compound for a single dispaplacement reaction

A

higher

22
Q

What is an acid?

A

An acid is a substanc e that when reacted with water create hydrogen atoms

23
Q

What is a binary acid?

A

Contains a hydrogen with a non-metal element

24
Q

What is a oxidizing acid

A

Contains hydrogen with a polyatomic ion

25
Q

How do you name a binary acid?

A

You find the element name for the non-metal.
Add the prefix hydro-.
Change the ending to -ic acid.

26
Q

What do you need to put in order to make HCl an acid?

A

(aq)

27
Q

What is a base?

A

A base is a substance that when reacting with water will produce hydroxide ions

28
Q

What does pH stand for?

A

Power of hydrogens

29
Q

The pH scale rangers from :

A

0 - 14

30
Q

pH < 7
pH = 7
pH > 7

A

is an acidic solution, more H1+ in solution
is a neutral solution, equal amounts of H1+ and OH1- in solution
is a basic solution, more OH- in a solution

31
Q

How much more acidic is :
8 - 5
4 - 2

A

1000
100

32
Q

What is a pH indicator?

A

A pH indicator is a substance that changes colour depending on the acidity of the solution.

33
Q

Acid will turn litmus paper -
Base will turn litmus paper -

A

Red
Blue

34
Q

What are some properties of an acid?

A

Sour
Corrosive
Conductive
pH less than 7
Turns litmus paper red
Reactive
Produces hydrogen ions

35
Q

What are some properties of a base?

A

Bitter
Corrosive
Conductive
pH more than 7
Turns litmus paper blue
Not reactive
Produces hydroxide ions

36
Q

What does a chemical formula tell us?

A

the type of atoms present
the number of atoms present
the type of compound

37
Q

What are metalic bonds?

A

Bonds formed by two metals, electrons are shared freely through each of the metal atoms

38
Q

Acids typically react with metals to produce ________

A

Hydrogen

39
Q

An acid + carbonate produces

A

CO2 + H2O + Product

40
Q

If the polyatomic acid ends in ate then it turns into __ ____
If the polyatomic acid ends in ite then it turns into ___ ____

A

ic acid
ous acid

41
Q

Acid + Base –>

A

Water + Ionic compound

42
Q

What is lime/Ca(OH)2 used for?

A

To neutralize soil and bodys of water

43
Q

What is the formula for acid rain?

A

NOx + H2O –> HNOx (SOx + H2O –> HSO)

Test Flashcards (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions