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WorksheetsChemistry Semester Final Exam
Total questions: 60
Worksheet time: 2hrs 11mins
Using a periodic table, how many protons does Copper have?
29
63
64
35
Using a periodic table, how many neutrons are in Iron?
26
56
30
86
Using a periodic table, how many electrons are in Sulfur
16
32
32.066
48
What is the correct equation for Density
Density equals volume divided by mass
Density equals mass divided by volume
Volume is equal to mass multiplied by density
Volume is equal to density multiplied by mass
Calculate the density in g/mL of 30 mL of solution that weighs 120 grams
4 g/ml
4 ml/g
.25 g/ml
.25 ml/g
Which of the following is a chemical change
cut banana turn brown
freezing water
melting butter
tear paper
Which is a physical change
Cutting a potato
Acid reacting with metal
Burning food
food turning into energy
Which of the following is a heterogeneous mixture
Salad
Tea
Chocolate milk
All answers are Homogeneous
This type of mixture is homogeneous
Salad
Sand
Tea
Stir Fry at the Chinese restaurant
This is a positive charged particle inside an atom
Proton
Neutron
Electron
Nucleus
Electrons have this type of charge
negative
postive
neutral
no charge
This is the largest category on the Periodic Table
Metals
Non Metals
Metaloids
Semi Metals
The first group or family on the periodic table is known as Alkali Metals
True
False
I have no idea because we were not taught this
Could be, but maybe not. I am not sure one way or the other. But I know that this is not the correct answer.
What determines the identity of an atom?
number of protons
number of electrons
number of neutrons
number of valence electrons
Which element is in period 1, group 8?
Helium
Hydrogen
Neon
Lanthanum
Which element is in period 3, group 4?
Silicon
Gallium
Carbon
Germanium
What type of bond forms between nonmetals only?
covalent
ionic
metallic
metalloid
Which of the following is a nonmetal?
Na
Pb
S
Al
What type of bond forms between H and Br?
metallic
ionic
covalent
metalloid
What type of bond forms between Na and O?
ionic
covalent
metallic
metalloid
Rank the elements Mn, Ne, O, Si, and Sr from lowest to highest electronegativity.
(low) Ne < Sr < Mn < Si < O (high)
(low) Sr < Mn < Si < O < Ne (high)
(low) O < Si < Mn < Sr < Ne (high)
(low) Ne < O < Si < Mn < Sr (high)
How many significant figures does the following measurement have: 0.002040 m?
6
4
3
2
Gold is best described as...
Element
Compound
Homogeneous Mixture
Heterogeneous Mixture
How many atomic orbitals exist in a d orbtial?
1
7
3
5
An atomic orbital can at most hold how many electrons, according to the Pauli Exclusion Principle?
1 electron
2 electrons
3 electrons
4 electrons
What element has the electron configuration 1s2 2s2?
Li
Be
He
Mg
Valence electrons are defined a the ...........
Electrons farthest away from the nucleus
Electrons closest to the nucleus
Electrons that just come and go - they don't stay with the atom
What is the formula for iron(III) chloride?
FeCl
Fe3Cl
FeCl2
FeCl3
What shape would this have?
Trigonal planar
Pyramidal
Tetrahedral
Bent
Which of the following is a polar molecule?
CH4
Xe
H2S
CO2
How close a measurement is to the accepted value is called..
Accuracy
Precision
Significant
Estimate
