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WorksheetsFINAL EXAM REVIEW
Total questions: 35
Worksheet time: 18mins
A new compound has just been developed. Its formula is: C17H2ON4NaO9P
How many different elements make up this compound?
8
7
6
32
Organisms are made of elements that form living matter. Which elements comprise the largest portion of living
matter?
Hydrogen, carbon, oxygen, and nitrogen
Chlorine, sodium, and oxygen
Oxygen, carbon, and silicon
Sulfur, calcium, carbon, and hydrogen
A student had a beaker with a small amount of baking soda. The student added a few drops of pickle juice to the
baking soda and observed fizzing and bubbling.
Based on observation, which of these can the student conclude?
A chemical reaction produced a solid.
No chemical reaction took place.
Only a physical change happened.
A chemical reaction produced a gas.
Strontium phosphate, Sr3(PO4)2, is a crystalline substance used in medicine and industry. How many phosphorus
atoms are represented in the formula for Sr3(PO4)2?
2
3
4
8
What is the mass number of a potassium (K) atom that has 20 neutrons?
18
19
20
39
Which of the following best describes an electron?
It has no charge and about the same mass as a proton.
It has a negative charge and much less mass than a proton.
It has a positive charge and much more mass than a neutron.
It has a negative charge and about the same mass as a neutron.
Which statement accurately describes the atoms of a specific element?
An indium‚ In‚ atom contains 115 protons inside the nucleus and 49 neutrons outside the nucleus.
A scandium‚ Sc‚ atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus.
An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus.
A zinc‚ Zn‚ atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus.
The chemical formula for sodium sulfate is Na2SO4. How many sulfur atoms are in the formula for sodium sulfate?
1
2
6
7
Which of the following is the symbol for chlorine?
Ch
C
Cl
Ce
Flour, sugar, cocoa, oil, and eggs are mixed together and placed in the oven to make brownies. When the
brownies are removed from the oven, they no longer look like the original ingredients.
Which of the following describes why the ingredients changed?
A biological change occurred.
No change occurred.
A physical changed occurred.
A chemical changed occurred.
Water has the chemical formula H2O. Which statement correctly describes water?
Water is not a pure substance, but is an element.
Water is a pure substance and an element.
Water is a pure substance and a compound.
Water is not a pure substance, but is a compound.
What do the letters Na and Cl represent in the chemical formula NaCl?
Mixtures
Compounds
Elements
Molecules
Which element is the lightest element, makes up 75% of the universe, and its chemical symbol is H?
Holmium
Helium
Hafnium
Hydrogen
Aluminum, sulfur, and chlorine are elements found on the periodic table. Tests involving these three elements
would show that at normal room temperature —
sulfur is malleable and aluminum conducts electricity
chlorine is malleable and conducts electricity
aluminum is malleable and conducts electricity
all three elements are malleable and conduct electricity
Which statement does NOT correctly compare silicon with another element?
Silicon is a better conductor of electricity than sulfur.
Silicon conducts electricity as well as copper does.
Silicon is a solid at room temperature, but argon is a gas.
Silicon is less malleable than silver.
A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has amass of 14.7 g and a volume of 2.2 cm3.
What is the density of the mineral sample?
0.15 g/cm3
32 g/cm3
13 g/cm3
6.7 g/cm3
The appearance of the surface of a mineral when it reflects light is known as -
streak
luster
conductivity
hardness
A student is testing several minerals in science class. First, the student scratched the minerals across a tile and then scratched the minerals with a copper penny and a steel tool.
What physical properties is the student testing?
Color and state
Streak and hardness
Luster and conductivity
pH and fracture
Which pair of properties describes the elements in Group 18?
They are chemically stable and liquid at room temperature.
They have eight valence electrons and are flammable.
They are magnetic and boil at low temperatures.
They are gaseous at room temperature and chemically stable.
A new compound has just been developed. Its formula is: C17H2ON4NaO9P
How many different elements make up this compound?
8
7
6
32
Organisms are made of elements that form living matter. Which elements comprise the largest portion of living
matter?
Hydrogen, carbon, oxygen, and nitrogen
Chlorine, sodium, and oxygen
Oxygen, carbon, and silicon
Sulfur, calcium, carbon, and hydrogen
Energy of movement
electrical energy
mechanical energy
light energy
sound energy
energy that comes from an electrical circuit
sound energy
mechanical energy
light energy
electrical energy
a material that lets heat and electricity travel though easily
conductor
insulator
solubility
erosion
a material that does not let heat and electricity travel through it easily
conductor
insulator
evaporation
refraction
resources that can be replaced in a reasonable amount of time
renewable resources
non-renewable resources
fossil fuels
resources that cannot be replaced in a reasonable amount of time
renewable resources
non-renewable resources
fossil fuels
The statement "to every action, there is an equal and opposite reaction" is _______.
Law of conservation of momentum
Newton's first law
Newton's second law
Newton's third law
The rate of change in velocity is called
final speed
constant speed
speed
acceleration
When frequency increases, what happens to the energy of the photon?
Stays the same
Increases
Decreases
