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WorksheetsT1 Chemistry Review Quiz
Total questions: 46
Worksheet time: 23mins
Spectroscopy is used to determine:
Concentrations of solutions
Size of particles in liquids
Absorption, emission, and/or scattering of light
How acidic or basic a solution is
A solution with a pH of 12 is Basic
true
false
The law of conservation of mass states that:
The number of atoms on each side needs to be the same
Matter can not be created nor destroyed, only converted
The number of protons must be the same to be the same element
Protons and neutrons are in the nucleus and electrons in the shells around
How many electrons can the first shell hold?
8
16
12
2
the number of protons in an atom is equal to:
The atomic mass
The number of electrons
The number of neutrons
The mass of the atom
Neutrons have a _____________ charge:
0
1+
1-
unknown
How many electrons can the second shell hold?
12
8
4
16
Exothermic reactions produce
Salt
Cold
Water
Heat
When an atom has gained or lost electrons it becomes an:
Radioactive
Ion
Proton
Isotope
The half Life of Cobalt-60 is
1 year
50%
5.27 years
5 grams
Metals tend to lose electrons therefore creating what charge?
Positive
Negative
Neutral
Zero
What substances do neutralisation reactions produce?
Water and Carbon Dioxide
Salt and Water
Salt
Salt and Carbon Dioxide
The relative mass of a proton, neutron and electron is
1, 1, 0
1,1, 0.00055
+1,0, -1
0.00055,1,1
Non-metals are positioned on the LHS of the staircase
True
False
The inner most electrons are found in the valence shell
True
False
The number of neutrons in the chlorine atom is
35
18
0
17
The number of electrons in the titanium atom is
48
22
26
47
Oxygen has 3 electrons in its valence shell
True
False
Oxygen has _______ electrons in its valence shell
6
4
2
8
Who did the Gold Foil Experiment which proved the nucleus to be a dense positively charged center of every atom?
J.J. Thomson
Niels Bohr
Ernest Rutherford
Robert Millikan
What is the atomic number of titanium?
44
22
23
45
How many half lives does this substance undergo before a negligible amount remains?
50
100
8
9
How many half lives does it take before 1/32 of the original substance remains?
5
6
4
0.5
What is the difference between these two isotopes?
1 proton
1 electron
1 neutron
1 valence shell
What are the reactants in Photosynthesis?
CO2, H2O and sunlight
CO2, H2O
The following equation is balanced.
True
False
Identify the correct coefficients to balance the following equation
1,2,3,4
2,3,3,3
2,3,4,3
1,3,4,3Ident
Identify the coefficients to balance the following equation
2,3,4
1,2,2
2,4,3
1,2,3
Bubbling chlorine gas through a solution of potassium iodide gives elemental iodine and a solution of potassium chloride
The reactants are chlorine gas and potassium iodide
The products are chlorine gas and potassium chloride
The products are potassium iodide and elemental iodine
The reactants are elemental iodine and chlorine gas
Identify the coefficients to balance the following equation.
2,10,8,6
1,5,4,3
3,4,5,1
2,5,4,3
Identify the coefficients to balance the following reaction
1,2,1,3
4,2,2,6
3,1,1,2
2,1,1,3
Magnesium burns in oxygen which results in magnesium oxide. What are the reactants?
Magnesium oxide and oxygen
Magnesium
Magnesium and oxygen
Oxide of magnesium
What are the (unbalanced) products of KCl + MgO?
K2O + MgCl2
KO2 + Mg2Cl
KCO + Mgl
MgClO + K
Identify the products of the following reaction
beryllium chloride anddd silver nitrate
Beryllium nitrate and silver chloride
silver nitrate and beryllium chloride
Beryllium chloride and silver chloride
Write the balanced chemical equation for the following word equation: When Flourine gas reacts with calcium metal, calcium fluoride powder is created
F2 + Ca ----> CaF2
F2 + Ca ----> F2Ca
F2 + Ca ----> 2CaF
2F2 + 2Ca ----> 2CaF2
Write the order of the coefficients to balance the following equation
2,1,1
1,2,1
2,1,3
1,2,2
Balance the following equation: N2 + O2 -----> N2O5
3,1,1
2,5,2
1,5,2
4,10,4
True or False: Unlike many substances, water expands as it freezes.
True
False
Write the correct order of the coefficients to balance the following equation
6,1,6,1
6,6,1,6
3,3,0.4,3
6,1,6,6
The only solid elements that assume liquid form at room temperature are bromine and mercury.
True
False
A handful of salt in a full glass of water will cause the water level to go down rather than overflowing the glass.
True
False
Metals tend to lose electrons therefore creating what charge?
Positive
Negative
Neutral
Zero
the number of protons in an atom is equal to:
The atomic mass
The number of electrons
The number of neutrons
The mass of the atom
Which of the following is an acid?
vinegar
bleach
sugar in water
starch in water
toothpaste in water
Write the order of the coefficients to balance the following equation
2,1,1
1,2,1
2,1,3
1,2,2
