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Chemistry Semester 1 Final Exam Review 2019 Flashcards | StudBud
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Chemistry Semester 1 Final Exam Review 2019
Chemistry Semester 1 Final Exam Review 2019
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Answers
1
How many protons are in an atom of Neon?
8
10
20
18
2
A teacher wants to see if music helps students study for at test. Some listen to music and some do not. Constant?
Students getting the same test
Students listening to music or not
The test score
3
What type of reaction does this activation energy show?
Endothermic
Exothermic
4
What type of reaction would ADD heat to the surroundings?
No reactions add heat to the surroundings
Endothermic
Exothermic and endothermic
Exothermic
5
What is the correct name for Cu
2
SO
4
?
Copper (II) sulfate
Dicopper tetra sulfate
Copper (I) sulfate
Copper Sulfate
6
How many nitrogen atoms are in 3Mg(NO3)2?
5
3
6
2
7
Who determined electrons were in specific orbitals around the nucleus?
Rutherford
Bohr
Dalton
Thomson
8
How many electrons are in P
-3
?
12
33
18
15
9
Which of the following was NOT one of Rutherford's conclusions from the Gold Foil Experiment?
Nucleus is very small but very dense
Electrons are part of the nucleus
Nucleus carries a positive charge
The atom is mostly empty space
10
The modern Periodic Table is arranged by...
decreasing atomic number
increasing atomic mass
decreasing atomic mass
increasing atomic number
11
Which type of compound has free floating electrons?
Covalent
Metallic
Ionic
No compounds have free floating electrons
12
Which shows a single replacement reaction?
AB --> A + B
A + BX --> B + AX
A + B --> AB
CO + O2 --> CO2 + H2O
13
Which axis does the independent variable go on in a graph?
X
We do not graph independent variables
Y
In the Title
14
If 5. 0 grams of sodium react with 10.0 grams of chlorine, how much sodium chloride should be formed?
50.0 g
10.0 g
15.0 g
5.0 g
15
What would boiling water to change it from a liquid to a gas be considered?
Endothermic
Exothermic
16
If you have a set of data; 2.3 mL, 2.4 mL, and 2.0 mL and the ACTUAL value is 4.0 mL, what type of data would this be?
Precise but not accurate
Neither accurate nor precise
Accrate and precise
Accurate but not precise
17
Which of the following is a possible indicator of a chemical change?
Bubbles (Gas)
All of these are possible indicators of a chemical change
Heat/Light/Change in Temperature
Color Change (Precipitate)
18
What type of reaction will take IN heat from the surrooundings?
No reaction takes heat IN
Endothermic
Both Endothermic and Exothermic
Exothermic
19
What is the correct electron configuration for Sc?
1s22s22p63s23p64s13d1
1s22s22p63s23p64s23d1
1s22s22p63s23p64s24d1
1s22s22p63s23p64s23d1
20
What would freezing water into ice be considered?
Endothermic
Exothermic
21
Which would have a smaller radius; S or S-2?
S-2
S
22
Which would have a larger ionization energy; K or Cs?
Cs
K
23
What is the name for HBr(aq)?
Hydrobromic acid
Hydrogen Bromide + water
Hydrogen Bromide
Hydrogen Bromic Acid
24
Which should have a larger radius; F or N?
F
N
25
What is the formula for Sulfurous Acid?
H2SO3
HSO3
HSO4
H2SO4
26
What are the coefficients; ___ Na + ____MgCl
2
--> ___ NaCl + ____ Mg
2. 1, 2, 1
2, 2, 2, 2
1,1,1,1
2, 1, 2, 2
27
Which type of compound could conduct electricity if it dissolved and dissocites in a solution?
No compound will ever conduct electricity
Covalent
Ionic
Metallic
28
Which electrons are considered valence?
s, p, d
s and p
s
s, p, d, f
29
How does a catalyst speed up a reaction?
It lowers the activation energy
It raise the time for the reaction to start
It changes an exothermic reaction into an endothermic reaction
It raises the activation energy
30
What is the formula for Tricarbon Octahydride
C3H7
CH
C2H8
C3H8
31
Who is credited with the first atomic theory?
Rutherford
Dalton
Thomson
Bohr
32
Which would have a larger electronegativity; F or O?
F
O
33
How many neutrons are in an atom of Bromine?
80
35
17
45
34
How many electrons are in Ca
+2
?
18
20
22
40
