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- 1. Multiple Choice
Which of the following is NOT true about the periodic table?
Atomic mass is equal to the number of neutrons.
Elements listed by their (increasing) atomic mass.
Groups are the elements listed in columns.
Periods are the elements listed in rows of 8 (for most rows).
- 2. Multiple Choice
Chemical properties are
an element’s ability to react with other elements.
an element's ability to change into a gas.
an elements attraction to water.
any property which can be observed or measured.
- 3. Multiple Choice
A physical reaction is a chemical reaction which
changes the physical properties of the elements.
changes the chemical properties of an element.
separates atoms in a mixture.
combines atoms in a mixture.
- 4. Multiple Choice
Which of the following are true about gas molecules? Choose two.
the particles move about quickly
the particles are far apart
the particles move slowly and vibrate in place
the particles are close together
- 5. Multiple Choice
Which of the following are true about the molecules in liquids? Choose two.
The particles slip easily over and around each other
Will take the shape of its container
The particles move slowly and vibrate in place
The particles have a definite shape
- 6. Multiple Choice
Which of the following are true about solids? Choose two.
The particles vibrate in place
Have a definite shape
The particles move quickly and freely
The particles take the shape of their container
- 7. Multiple Choice
Somethings ability to dissolve, or mix completely with a liquid, is
solubility.
boiling point.
freezing point.
density.
- 8. Multiple Choice
Which of the following is an example of something dissolving?
Mixing sugar, lemon juice, and water for lemonade.
Mixing sand and gravel for the substrate of a fish tank.
Mixing oil and vinegar for salad dressing.
Mixing cereals and nuts for a snack mix.
- 9. Multiple Choice
Materials boil at different temperatures, the specific temperature a material has to reach in order to boil is called the materials
boiling point.
freezing point.
melting point.
solidification point.
- 10. Multiple Choice
Which of the following is a compound containing more than one element?
NaCl
Be
S
Ne
- 11. Multiple Choice
Which of the following chemical formulas has a subscript?
1. H2O
2. 2HCl
3. NaCl
1 only
2 only
3 only
1 and 2
- 12. Multiple Choice
How many oxygen atoms are in an atom of hydrogen peroxide (H2O2) ?
2
4
1
8
- 13. Multiple Choice
Which of the following are ways a mixture can be separated?
all of these.
sifting/straining
evaporating
dissolving
- 14. Multiple Choice
Choose the correct chemical formula for the molecule
CO
OC
CMO
CC
- 15. Multiple Choice
Choose the correct chemical formula for the molecule
NaCl
NACL
NaCL
ClNa
- 16. Multiple Choice
How many atoms are in the following chemical formula?
C6H12O6
24
3
18
12
- 17. Multiple Choice
How many atoms are in the following chemical formula?
2CaCO3
10
8
4
5
- 18. Multiple Choice
What is the atomic number of the atom?
6
12
18
3
- 19. Multiple Choice
What is the atomic number of the following atom?
20
40
60
10
- 20. Multiple Choice
A thermometer is heated. The volume of the liquid inside of the thermometer increases, and the level of the liquid rises. What happens to the mass of the liquid in the thermometer as the level of liquid rises?
The mass stays the same.
The mass increases.
The mass decreases.
It depends on the type of liquid.
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