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Chemistry Review
Chemistry Review
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Quiz covering chemistry, periodic table, and bonding. #chemistry #periodictable #elements
Flashcards
31 cards
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Questions
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Answers
1
What element is shown in the atomic model below?
manganese
magnesium
chromium
beryllium
2
Where would pure substance be located?
B
C
A
3
What would C be labelled?
Mechanical Mixture
Element
Suspension
Compound
4
Which particle is
NOT
found in the nucleus of an atom?
electron
neutron
megatron
proton
5
Change of Colour, change of smell, precipitate, change in energy or formation of a gas are
Physical Change
Chemical Change
6
Why are some of the elements in the periodic table written in blue lettering?
Solid at room temperature
water vapor
liquid at room temperature
Cold
7
Whose experiment showed that the nucleus existed and has a + charge?
Bohr
Dalton
Thompson
Rutherford
8
Law of conservation of mass: the mass of the products must be ____ the mass of the reactants.
greater than
more
equal to
less than
9
Using the periodic table, how many
valence
electrons are in an atom of carbon?
4
12
8
16
10
Combustion, Corrosion, and Cellular respiration all have this as a reactant..
Rust
Carbon Dioxide
Nitrogen
Oxygen
11
Using the periodic table, what is the atomic number of barium?
137
193
81
56
12
How many valence electrons in the atom below?
2
6
8
4
13
In an Endothermic reaction, energy is
Created
Released
Destrpyed
Absorbed
14
What type of bond holds together the atoms in a molecule of caffeine, C
8
H
10
N
4
O
2
?
metallic
molecular covalent
ionic
15
Theobromine,a chemical in chocolate, has the formula C
7
H
8
N
4
O
2.
What elements and how many atoms?
6 carbon, 8 hydrogen, 4 nitrogen, 2 ozone
6 carbon, 8 hydrogen, 4 nickel, 2 oxygen
6 copper, 8 hydrogen, 4 nickel, 2 oxygen
7 carbon, 8 hydrogen, 4 nitrogen, 2 oxygen
16
Look at the element key for tin. How many neutrons in a tin atom?
50
16
69
119
17
Who came up with the Billiard ball model of the atom?
Bohr
Dalton
Thompson
Rutherford
18
A
row
of elements on the periodic table is called a ______________.
group
period
set
family
19
If an atom gains an electron, it has a ______________ charge.
neutral
negative
positive
20
In an exothermic reaction, energy is...
Destroyed
Released
Absorbed
created
21
Crushing a reactant into a powder increases the rate of a reaction. This is referred to as
Temperature
Catalyst
Concentration
Surface area
22
What type of bond holds together a carbon dioxide molecule?
metallic
covalent
molecular
ionic
23
What type of bond would form between lithium and bromine?
metallic
covalent
James
ionic
24
Which chemical equation is correctly balanced according to the law of conservation of mass?
2CH4 + 3O2 → 3H2O + CO2
CH4 + O2 → H2O + CO2
CH4 + 2O2 → 2H2O + CO2
2CH4 + O2 → H2O + 2CO2
25
What is special about elements that are in the same group of the periodic table?
They have the same number of electrons.
They have similar chemical properties.
They have the same size nucleus.
They have the same number of protons.
26
In the following chemical reaction, what are the
reactants
? HCl + NaOH → H
2
O + NaCl
NaCl only
HCl and NaOH
HCl only
H2O and NaCl
27
If 23g of sodium react with 17g of chloride how much Sodium Chloride would you have?
5g
23g
40g
17g
28
Which formula below represents a molecule?
2H
Cl
CO2
O
29
Colour, shape, size, solubility, density, and state of matter are all examples of
Chemical Property
Physical Property
30
What evidence of a chemical reaction is best shown?
Formation of a preciptate
Change in energy
Formation of a gas
Change in Odour
31
What would B be labelled?
Element
Polyatomic ion
Colloid
Compound
