- #1
AngelShare
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I think I got these right but I wanted to check first before I took my test...
The ones that don't have any answers are ones I need help with.
Concept Review:
1. Which of the following is most likely to form a cation?
Xe
Cl
Ca
S
2. Which of the following is a chemical change?
cutting paper
spoiling milk
freezing water
dissolving sugar in hot tea
3. The formula for Magnesium iodide is:
MgI
Mg2I
Mg2I2
MgI2
4. List three common substances in your house that are pure compounds.
water
vegatable oil
I'm kind of just pulling answers out now so I'll stop...
5. Which of the following is an ionic compound?
Al
CaCl2
CO2
None of these is ionic
6. A potassium ion is a cation and a chloride ion is an anion. What does this have to do with why potassium and chlorine form a bond?
7. What is the name of the compound Pb(NO3)2?
lead(ll) nitrite
lead(ll) nitrate
lead nitrate(ll)
lead nitrate
8. Which of the following is a compound?
carbon
lithium
water
oxygen
9. According to the law of conservation of mass, when nitrogen gas and hydrogen gas react to form a compound, the mass of the compound will be ______________ the combined masses of the nitrogen and hydrogen.
equal to
greater than
less than
either greater or less than
10. An example of a heterogeneous mixture would be
salt
water containing dissolved sugar
water
chicken noodle soup
11. Which of the following is a physical property?
color
volume
freezing point
all of the above
12. Multiply the following using significant digits:
2.51 x 3.0007
7.53
7.5
7.5318
7.532
The ones that don't have any answers are ones I need help with.
Concept Review:
1. Which of the following is most likely to form a cation?
Xe
Cl
Ca
S
2. Which of the following is a chemical change?
cutting paper
spoiling milk
freezing water
dissolving sugar in hot tea
3. The formula for Magnesium iodide is:
MgI
Mg2I
Mg2I2
MgI2
4. List three common substances in your house that are pure compounds.
water
vegatable oil
I'm kind of just pulling answers out now so I'll stop...
5. Which of the following is an ionic compound?
Al
CaCl2
CO2
None of these is ionic
6. A potassium ion is a cation and a chloride ion is an anion. What does this have to do with why potassium and chlorine form a bond?
7. What is the name of the compound Pb(NO3)2?
lead(ll) nitrite
lead(ll) nitrate
lead nitrate(ll)
lead nitrate
8. Which of the following is a compound?
carbon
lithium
water
oxygen
9. According to the law of conservation of mass, when nitrogen gas and hydrogen gas react to form a compound, the mass of the compound will be ______________ the combined masses of the nitrogen and hydrogen.
equal to
greater than
less than
either greater or less than
10. An example of a heterogeneous mixture would be
salt
water containing dissolved sugar
water
chicken noodle soup
11. Which of the following is a physical property?
color
volume
freezing point
all of the above
12. Multiply the following using significant digits:
2.51 x 3.0007
7.53
7.5
7.5318
7.532