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College Prep Chemistry review
__KMnO4 + __HCl = __KCl + __MnCl2 + __H2O + __Cl2
Which group is the alkaline metal?
College Prep Chemistry review
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Answers
1
Which group is the alkaline metal?
17
18
1
2
2
__KMnO4 + __HCl = __KCl + __MnCl2 + __H2O + __Cl2
1, 8, 3, 6, 16, 18
3, 3, 7, 4, 2, 13
1, 2, 3, 8, 24, 13
2, 16, 2, 2, 8, 5
3
Which of the following is a noble gas?
Be
F
Ne
Br
4
How many protons in Oxygen?
7
4
8
6
5
Balance __Fe + __O = __Fe2O3
2,3,1
1,1,1
6,8,10
1,2,3
6
Which element is present in all organic compounds?
oxygen
phosphorous
nitrogen
carbon
7
6NaOH + 2Al --> 2Na3AlO3 + 3H2 # of moles of aluminum required to make 3 moles of hydrogen?
1 moles
2 moles
4moles
3 moles
8
Name the ionic compound Ca(C2H3O2)2
Calcium Nitrate
Calcium Acetate
Calcium Arsenate
Calcium Arsenide
9
Iron is adding electrons to what orbitals?
p
f
s
d
10
K2S is called?
Krypton Sulfur
Potassium Sulfide
Potassium Sulfur
Krypton Sulfide
11
Which element is paired with the wrong symbol
Sulfur, S
Calcium, Ca
Nitrogen, N
Potassium, P
12
Fe2O3 is written as? Note Fe has a 3+ charge and a 2+ chargeand O has a 2- charge
Cr(NO3)3
Iron(II)Oxide
Copper(II)Sulfate
Iron(III)Oxide
13
Metallic bonds are the forces of attraction between the free-floating valence electrons and
Metal Anions
Positively charged metal ions
Metal Cations
Negatively charged metal ions
14
What is the symbol for sodium
Na
Li
S
Rb
15
A compound is 2 or more ______________________ combined
compounds
molecule
atoms
element
16
Hydrogen is a part of what family of elements?
halogen
Alkali
noble gases
alkaline
17
What is the name for the KBr?
Potassium bromide
Bromide potassium
Beryllium potassium
Potassium beryllium
18
Which phrase best describes an apple
homogeneous mixture
heterogenous substance
homogeneous compound
heterogeneous mixture
19
What is the chemical symbol for gold?
Au
Al
At
Ag
20
Fe2S3 is what ionic compound?
Iron Sulfide
Calcium Nitrate
Barium Phosphate
Aluminum Nitrate
21
What element is a metal
As
K
N
He
22
Write the formula's name Ba(NO2)2
Beryllium Nitrite
Beryllium Nitrate
Barium Nitrite
Barium Nitrate
23
JJ Thomson introduced to us that atoms _____
Compounds are whole # ratios
Are the smallest whole unit
Have a negative charge
Make up matter
24
Which of these is not true about metals?
Are malleable and ductile
Tend to gain electrons
Have luster
Conduct heat and electricity
25
Compared to the charge and mass of a proton, an electron has
the same charge and a smaller mass
an opposite charge and the same mass
an opposite charge and a smaller mass
the same charge and the same mass
26
Which of the follow is not a metal?
K
Zn
Na
S
27
How many moles is 14g of Li
4
2
14
10
28
Which of the following elements is a metal
N
C
Ne
Ni
29
How many neutrons are in Pb
125
82
120
81
30
How many neutrons does the element iron have
20
50
40
30
