Worksheetsxhemcitsry
Total questions: 23
Worksheet time: 17mins
Which of the following properties of metal are chemical properties.
1. It dissolves in acid
2. it rusts in air
3. Its density is 5.5 g/cm^3
4. It melts at 420 deg Celsius
2 and 4
1 and 2
3 and 4
All of the above
Alkali metal cations carry a charge of what?
-2
+1
+2
0
How many protons, neutrons, and electrons are in the 41Ca atom?
41 protons, 0 neutrons, 41 electrons
21 protons, 20 neutrons, 20 electrons
20 protons, 21 neutrons, 20 electrons
20 protons, 21 neutrons, 21 electrons
How many protons, neutrons, and electrons are in the 41Ca atom?
41 protons, 0 neutrons, 41 electrons
21 protons, 20 neutrons, 20 electrons
20 protons, 21 neutrons, 20 electrons
20 protons, 21 neutrons, 21 electrons
The correct formula for iron(II) phosphate is:
Fe3(PO4)2
Fe(PO4)2
Fe2PO4
FePO4
Given that: CuBr2(aq) + Li2CrO4(aq) → CuCrO4(s) + 2 LiBr(aq), which of the following species are classified as a spectator ion?
1. Cu2+(aq) 2. Br-(aq) 3. Li+(aq) 4. CrO42-(aq)
5. CuCrO4(s)
1 and 5
3 and 4
4 and 5
2 and 3
A 6.55 × 10−3 M solution of Cd(NO3)2 can be made by dissolving ____ grams of the salt in sufficient water to make 500 mL of the solution.
1.679
.679
0.99
0.774
Determine the initial volume needed to generate 4.50 L of 1.60 M HNO3 from 2.40 M HNO3 by dilution.
1.06 L
3.00 L
2.50 L
6.75L
A liquid boils at −452.2 °F. What is this temperature in Kelvin?
4.2 K
109 K
97.8 K
-80.3 K
Which of the following can be classified as a precipitation reaction?
SO3(g) + H2O(l) → H2SO4(aq)
Br(aq) + NaOH(aq) → H2O(l) + NaBr(aq)
2 Na(s) + 2 H2O(l) → 2 NaOH(aq) + H2(g)
Pb(NO3)2(aq) + 2 KI(aq) → PbI2(s) + 2 KNO3(aq)
Determine the number of electrons in the Au3+ ion?
6
76
3
21
Determine the simplest formula of the compound which has the composition 74.0 % C, 8.65 % H, and 17.4 % N by mass.
C6H7N
C5H7N
CHN
C5H7N
How many oxygen atoms are present in 8.70 g of CuSO4∙5H2O?
9
1.89 × 10^23
1.20 × 10^23
3.48 × 10^-2
An element has three naturally occurring isotopes with the following masses and natural
abundances:
Isotope Mass (amu)
1 53.94
2 55.93
3 56.94
Abundances (%)
5.845
91.75
2.405
What is the identity of the element above?
Ni
Br
Fe
Co
Which of the following is an example of an alcohol?
CH3NH2
C2H5OH
CH3OCH3
CHO2CHO2
Write a balanced chemical equation describing the reaction between butane (C4H10) and oxygen (O2) to form carbon monoxide and water?
2C4H10 (l)+9O2(g)→8CO(g)+10H2O(l)
C4H10 (l)+6.5O2(g)→4CO2(g)+5H2O(l)
C4H10 (l)+4.5O2(g)→4CO(g)+5H2O(l)
C4H9(l)+4.5O2(g)→7CO(g)+5H2O(l)
Give the name of the following compound: N2O
nitrogen oxide
dinitrogen monoxide
dinitrogen monoxygen
dinitrogen oxide
Which of the following represent(s) a chemical change?
1. melting of ice.
2. rusting of an iron bridge.
3. burning of a wooden stick. 4. dissolving of sugar in water. 5. electrolysis of water.
2, 3, and 5
1, 3, and 4
1 and 4
2 and 5
What is the net ionic equation for the reaction between aqueous sodium hydroxide and aqueous nitric acid?
HNO3(aq) + NaOH(aq) → H2O(l) + NaNO3(aq)
HNO3(aq) + OH-(aq) → H2O(l) + NO3-(aq)
H+(aq) + OH-(aq) → H2O(l)
Na+(aq) + NO3-(aq) → NaNO3(aq)
Mixing an acid and a base leads to a reaction known as (a) , in which the resulting solution is neither acidic nor basic
Atoms have a nucleus which contains ________ and ______. The nucleus is surrounded by a cloud of ________.
electrons, protons and protein
protons, neutrons and electrons
protons, electrons and neutrons
protons, neutrons and the love I have for you
Draw a hydrocarbon Isomer.
I believe in you :)
A precipitation reaction is an aqueous reaction that produces a solid, called a precipitate.
What solid does a precipitation reaction create
Liquid
Sublime
Precipitate
Gas
What does a precipitation reaction produce
precipitate
gas
sublime
liquid
