Brainscape's Knowledge GenomeTM

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


See full index

My subjects > Chemistry > Flashcards

Chemistry Flashcards

1
Q

What is an atom?

A

All substances are made of atoms

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

What is an element?

A

Is made up of only one atom

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

What is a compound?

A

Two or more elements are chemically combined together

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

What is a reactant?

A

A substance that reacts

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

What is a product?

A

New substances that are formed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a mixture?

A

Is two or more elements or compounds that are not chemically combined together

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

What is filtration?

A

Used to separate soluble solids from insoluble solids

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

What is crystallization?

A

Used to obtain a soluble solid from a solution

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

What is chromatography?

A

Used to separate the different soluble, coloured components of a mixture

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

What is simple distillation?

A

Used to obtain a solvent from a solution

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

What is fractional distillation?

A

Used to seperate mixtures in which the components have different boiling points

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

What is an atomic number?

A

Number of protons

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

What is a mass number?

A

The number of protons and neutrons in an atom

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

What is the equation for number of neutrons?

A

Number of neutrons = mass number - atomic numbers

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

What is an electron configuration?

A

Shows how the electrons are arranged around the nucleus in shells

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

How do atoms become ions?

A

Metal atoms lose electrons to become positive ions

Non- metal gain electrons to become negative ions

17
Q

What is an isotope?

A

An element that has the same number of protons but a different number of neutrons

18
Q

Subatomic Particles

A

Subatomic Particle - Relative Mass - Relative charge
Proton 1 +1
Neutron 1 0
Electron very small -1

19
Q

Properties of group 0

A

Noble gases
Full outer shell
Very unreactive
Boiling points increase down the group

20
Q

Properties of group 1

A

Reacts with non-metals to for ionic compounds
Alkali metals
One electron in outer shell
Low melting and boiling points that decrease
More reactive through group
Stored in oil - react to oxygen and water
Metal hydroxide
Low density

21
Q

Properties of group 7

A 
Non-metals
Halogens
Seven electrons in outer shell
Reactivity decreases
Ionic salts
Displace
22
Q

Transition Metals

A 
Center of the periodic table
Coloured compounds
Different charged ions
Catalysts
Good conductors of heat and electricity
Easily bent or hammered to shape
23
Q

What are the three types of matter?

A

Solid
Liquid
Gas

24
Q

What are coarse particles?

A

They have a diameter between 1x10-5m and 2.5x10-6m

25
Q

What is a intermolecular force?

A

Forces of attraction between the molecules

26
Q

How would you show a covalent bond?

A

Through the dot and cross diagram

27
Q

What is a covalent bond?

A

A pair of shared electrons between atoms, for example - non metallic elements and compounds of non metals

28
Q

What is an alloy?

A

A mixture that contains a metal and at least one other element

29
Q

What are the metallic properties?

A
  • Strong
  • high melting and boiling point
  • thermal and electrical conductors
  • bent or shaped easily
30
Q

What is a metallic bond?

A

A giant structure in which the outer shell electrons are delocalised - not bound to one atom

31
Q

What is a nanoparticle?

A

A few hundred atoms that can be developed

32
Q

What are the state symbols?

A

S for solid
L for liquid
G for gas
AQ for aqueous - dissolved in water

33
Q

What are the properties of ionic compounds?

A
  • High melting and boiling point
  • do not conduct electricity when solid
  • do conduct electricity when molten or in solution
34
Q

What is a melting point?

A

Melt or freeze at one specific temperature

35
Q

What is an ionic bond?

A

Has a strong electrostatic force

36
Q

What is a boiling point?

A

Boil and condense at one specific temperature

37
Q

What are the properties of a solid?

A
  • Regular arrangement
  • very close together
  • vibrate about fixed positions
38
Q

What are the properties of a gas?

A
  • Random arrangement
  • further apart
  • move in all directions quickly
39
Q

What are the properties of a liquid?

A
  • Random arrangement
  • close together
  • flow around each other

My subjects (5 decks)

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