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- 1. Multiple Choice
What Element has the symbol (Ar)
Arsenic
Astitine
Argon
Gold
- 2. Multiple Choice
Does not have a definite volume or shape.
Plasma
Gas
Liquid
Solid
- 3. Multiple Choice
Made up of one or more of the same kind of atom chemically combined.
Atom
Compound
Element
Mixture
- 4. Multiple Choice
The smallest unit of an element that maintains the properties of that element.
Matter
Law of Conservation of Mass
Atom
Element
- 5. Multiple Choice
A sample substance has the chemical formula: H2CO3
One molecule of this sample contains
two different elements with atomic numbers 1 and 27.
two different elements with atomic numbers 2 and 29.
three different elements with atomic numbers 1, 6, and 8.
three different elements with atomic numbers 2, 8, and 20.
- 6. Multiple Choice
Select two of the conclusions that best describe the diagram.
The substances are matter made from atoms.
The substances are molecules made from atoms.
The substances are elements made from molecules.
The substances are atoms made from elements.
The substances are elements made from matter.
- 7. Multiple Choice
Espen draws an atomic model for the element neon (Ne) using information from the periodic table. How many protons and electrons does he include in his model?
seven protons and seven electrons
ten protons and ten electrons
ten protons and twenty electrons
twenty protons and twenty electrons
- 8. Multiple Choice
The most abundant element in the universe is hydrogen, which has the symbol
H and the atomic number 1.
He and the atomic number 2.
Ge and the atomic number 32.
Hg and the atomic number 80.
- 9. Multiple Choice
Carbon monoxide is a simple compound of one carbon atom and one oxygen atom. What is the sum of atomic numbers for all the elements in carbon monoxide?
28
14
6
8
- 10. Multiple Choice
Which of the following is true about the atoms and molecules in the world?
A small, finite variety of atoms make up a nearly infinite variety of molecules.
A nearly infinite variety of atoms make up a small, finite variety of molecules.
A small, finite variety of atoms make up a small, finite variety of molecules.
A nearly infinite variety of atoms make up a nearly infinite
variety of molecules.
- 11. Multiple Choice
Read the list of four different substances.
1. Salt solution
2. Frozen yogurt
3. Copper penny
4. Baking powder
What do they all have in common?
They are all made of atoms.
They are in the same state of matter.
They have the same chemical properties.
They have the same physical properties.
- 12. Multiple Choice
Ammonium sulfide, a chemical characterized by its foul odor, has the following chemical formula: (NH4)2S
How many atoms of the element nitrogen are in one molecule of ammonium sulfide?
14
9
6
2
- 13. Multiple Choice
The formula for baking soda is given: NaHCO3
This formula indicates that a molecule of baking soda contains
1 hydrogen atom, 1 sodium atom, 3 carbon atoms, and 3
oxygen atom.
1 sodium atom, 1 hydrogen atom, 1 carbon atom, and 3 oxygen atoms.
1 potassium atom, 1 helium atom, 1 carbon atom, and 1 oxygen atom.
1 carbon atom, 1 helium atom, 1 calcium atom, and 3 oxygen atoms.
- 14. Multiple Choice
Acetic acid has the following chemical formula: CH3COOH
How many atoms of the element carbon are in a molecule of acetic acid?
6
1
4
2
- 15. Multiple Choice
More than half of the elements on the periodic table are metals, most of which are
semiliquid at room temperature.
liquid at room temperatures.
gases at room temperature.
solid at room temperature.
- 16. Multiple Choice
Two particles of oxygen bonded together is
an oxygen molecule.
an oxygen compound.
an oxygen atom.
an oxygen mixture.
- 17. Multiple Choice
The substance water, H2O , is
an element made of three atoms, 2 hydrogen and 1 oxygen.
a solution made of two compounds, 2 hydrogen and 1 oxygen.
an atom made of two compounds, 2 hydrogen and 1 oxygen.
a molecule made of three atoms, 2 hydrogen and 1 oxygen.
- 18. Multiple Choice
Cobalt phosphate has a bright violet color and was once used as a paint pigment. Cobalt phosphate has the following chemical formula: Co3(PO4)2
How many cobalt atoms are found in one molecule of cobalt phosphate?
9
3
5
28
- 19. Multiple Choice
Aspirin, or acetylsalicylic acid, has the following chemical formula: C9H8O4
One aspirin molecule contains
carbon, helium, and oxygen.
calcium, hydrogen, and osmium.
carbon, hydrogen, and oxygen.
calcium, helium, and osmium.
- 20. Multiple Choice
Beryllium borohydride has the following chemical formula:
Be(BH4)2
How many hydrogen atoms are found in a molecule of beryllium borohydride?
1
8
10
4
- 21. Multiple Choice
Which of the following terms refers to the smallest particle into which an element can be divided and still remain the same substance?
atom
electron
neutron
nucleus
- 22. Multiple Choice
An element is
able to be separated.
made up of only one type of atom.
composed of different types of atoms combined together.
always in a liquid state at room temperature.
- 23. Multiple Choice
Which three particles make up an atom?
protons, neutrons, and isotopes
neutrons, isotopes, and electrons
positives, negatives, and electrons
protons, neutrons, and electrons
- 24. Multiple Choice
Marcus discovered that sodium (Na) is found in Group 1, Period 3 on the periodic table. Where should Marcus look to find another element that has similar properties to those of sodium?
in Group 1
in Period 3
on the opposite side of the periodic table
at elements whose symbols begin with the letter N
- 25. Multiple Choice
What is the minimum number of atoms needed to make a molecule?
0
1
2
3
- 26. Multiple Choice
Chalkboard chalk is often made using calcium carbonate. The smallest unit of calcium carbonate is given by the formula: CaCO3
What are the components of calcium carbonate?
1 calcium atom, 1 carbon atom, and 3 oxygen atoms
1 calcium atom, 1 carbon atom, and 1 oxygen molecule
1 calcium molecule, 1 carbon molecule, and 3 oxygen atoms
1 calcium molecule, 1 carbon molecule, and 1 oxygen molecule
- 27. Multiple Choice
The diagram models a change in some sample of matter.
What change is illustrated in the diagram?
molecules that formed elements
molecules that formed atoms
atoms that formed molecules
atoms that formed elements
- 28. Multiple Choice
The diagram shows a sample of matter undergoing some change.
What kind of change is shown in the diagram?
elements breaking down into atoms
molecules breaking down into atoms
atoms breaking down into molecules
elements breaking down into molecules
- 29. Multiple Choice
When sodium is mixed with water, an explosion takes place. Based on its location on the periodic table, how will potassium behave with water?
Potassium, which shares similar properties with sodium, will explode in water.
Potassium, which shares similar properties with sodium, will not explode in water.
Potassium, which does not share similar properties with sodium, will explode in water.
Potassium, which does not share similar properties with sodium, will not explode in water.
- 30. Multiple Choice
A majority of the 118 elements on the periodic table are classified as
liquids.
metals.
metalloids.
non-metals.
- 31. Multiple Choice
Students created four different models to show the difference between atoms and molecules. The pictures show the four models they created. Only two of the models are correct. Which models correctly show atoms and molecules?
model 1 and model 4
model 2 and model 3
model 2 and model 4
model 1 and model 3
- 32. Multiple Choice
Which statement best describes a major difference between different types of elements?
Only some elements are composed of atoms with electrons.
Only some elements have atoms with subatomic particles.
The atoms of different elements have different locations for their nucleus.
The atoms of different elements have different numbers of protons and electrons.
- 33. Multiple Choice
What statement is true about the eight elements on the periodic table termed metalloids?
They have properties of both metals and nonmetals.
They are the only man-made elements.
They are the only naturally occurring elements.
They all have the same number of protons and neutrons.
- 34. Multiple Choice
Methane has the following chemical formula: CH4
How many total atoms are found in the most basic unit of methane?
1
2
4
5
- 35. Multiple Choice
The chemical formula shows the basic unit of sugar.
C12H22O11
What makes up a basic unit of sugar?
3 molecules from 45 elements
45 molecules from 3 atoms
45 atoms from 3 elements
3 atoms from 45 molecules
- 36. Multiple Choice
Select all of the elements that MOST LIKELY share properties with oxygen.
osmium
potassium
selenium
sulfur
tin
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