stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Periodic table and atoms (Nat 5) Flashcards | StudBud
Explore
/
Periodic table and atoms (Nat 5)
Small covalent molecules are known as:
What is a covalent bond?
Periodic table and atoms (Nat 5)
50 terms
·
StudBud Administration
·
24 plays
Imported from external platform
Flashcards
50 cards
F
Practice quiz
P
Host live
L
Questions
50
Answers
1
What is a covalent bond?
A shared pair of protons formed between two non metals
A shared pair of electrons formed between two metals
A shared pair of electrons formed between a metal and a non metal
A shared pair of electrons formed between two non metals
2
Small covalent molecules are known as:
Small
Lattices
Discrete
Networks
3
Why do covalent networks have high melting and boiling points?
Held together by electrostatic forces
Only contains strong covalent bonds
Held together by strong opposite charges
Have strong forces of attraction between molecules
4
How can you work out the mass of a compound?
n = c x GFM
n = m x GFM
m = c x GFM
m = n x GFM
5
In electrolysis, which electrode will the positive ion be attracted to?
none
Positive
Negative
6
How are ions formed?
When atoms have delocalised electrons that pass from one to another
When atoms share electrons to get a full outer shell
When atoms gain or lose electrons to get a full outer shell
When compounds have full outer shells
7
neutrons are:
Positive
Negative
Neutral
8
Protons are:
Negative
Positive
Neutral
9
Why can ionic substance conduct electricity when in solution?
The ions are free to move
Delocalised electrons
The ions stay together
The electrons are free to move
10
covalent molecules do not conduct electricity
False
True
11
One mole is equal to the GFM
True
False
12
How are the elements on the periodic table arranged?
Decreasing reactivity
Increasing reactivity
Increasing atomic number
Decreasing mass number
13
what valency does group 6 have?
3
0
2
1
14
What are the diatomic elements?
F Cl, Br, I, O, He, C
H, N, O, F Cl, Br, I
Br, I, N, O, C, Na, Mg
H, N, O, K, Na, C, Rn
15
What is the formula of Calcium bromide?
CaBr2
Br2Ca2
Ca2Br2
Ca2Br
16
Which of these diatomic elements has a double bond?
Bromine
Hydrogen
Oxygen
Chlorine
17
electrons are:
Positive
Neutral
Negative
18
What do we mean by diatomic?
two atoms joined together
a metal and non metal joined together
two compounds joined together
2 or more atoms joined together
19
Ionic compounds bond together to create:
Ionic networks
Ionic lattices
Ionic plates
Discrete molecules
20
If copper chloride is seperated with electrolysis, what will be observed at the positive electrode?
Nothing
A white solid forming
Bubbles of gas
A brown solid forming
21
What is the name of group 1?
Alkali metals
Noble gases
Alkali Earth metals
Halogens
22
What are ionic bonds?
Electrostatic attraction between positive and negative ions
Atoms arranged in rowa with delocalised electrons between them
Electrostatic attraction between electrons and nuclei
A shared pair of electrons formed between two non metals
23
The most abundant isotope will be nearest to the average mass
False
True
24
How can you work out the concentration of a solution?
n = m x V
n = C /
n = V x n
n = C x V
25
The metals can be found on the left hand side of the periodic table
True
False
26
What is the name of group 8?
Alkali metals
Halogens
Noble gases
Alkali Earth metals
27
What is the shape of this compound?
angular
linear
trigonal pyrimidal
tetrahedal
28
What is an isotope?
atoms with the same number of protons but different number of neutrons
atoms with the same number of protons but different number of electrons
atoms with the same number of neutrons but different number of protons
atoms with the same number of neutrons but different number of electrons
29
Why is a D.C. current used in electrolysis?
To keep the ions together
To make sure the current stays the same
To set up permanant dipoles
So the products can be identified
30
the rows of the periodic tables are called groups
False
True
31
What is the formula of Potassium sulphide?
P2S
K2S2
K2S
KS2
32
What is the shape of this compound?
tetrahedal
linear
angular
trigonal pyrimidal
33
Ionic substances do not conduct electricity in any form
False
True
34
what valency does group 3 have?
2
0
1
3
35
What is the name of group 7?
Noble gases
Halogens
Alkali Earth metals
Alkali metals
36
What is the electron arrangement of Sodium?
2, 6, 3
2, 8, 1
8, 3
1, 8, 2
37
Why are atoms neutral?
number of protons and neutrons = number of electrons
number of neutrons = number of electrons
number of protons = number of electrons
number of protons = number of neutrons
38
Large covalent structures are known as covalent networks
True
False
39
The formula of transition metals is given in roman numerals
False
True
40
What does the mass number tell us?
number of protons - number of neutrons
number of protons + number of neutrons
number of protons + number of electrons
number of electrons + number of neutrons
41
Why do covalent molecules have low melting and boiling points?
They have weak bonds
They have strong bonds and strong forces of attraction
They have strong bonds but weak forces between molecules
They have weak bonds but strong forces between molecules
42
what valency does group 8 have?
3
2
1
0
43
Why are elements arranged into groups?
They get more reactive as they go down the group
Similar chemical properties and different numbers of outer electrons
They were discovered in that order
Similar chemical properties and the same number of outer electrons
44
All shells contain 8 electrons
True
False
45
What is electrolysis?
The breaking up of metallic substances using electricity
The breaking up of covalent substances using electricity
The breaking up of ionic substances using electricity
46
Overall an atom has what charge?
Neutral
Positive
Negative
47
What is the shape of this compound?
linear
tetrahedal
angular
trigonal pyrimidal
48
How do we work out the charges of an ionic compound?
Using roman numerals
Using the period number
Using the valency
Using the number of protons
49
The atomic number is equal to:
The number of neutrons
The mass number
The number of atoms
The number of protons
50
Protons and electrons have a mass of 1
True
False
