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Q 1/20
Score 0
A method of separation that relies on different boiling points of substances and uses a condenser to convert one of the substances from gas back to liquid is ...
45
chromatography
distillation
filtration
gravimetric analysis
Q 2/20
Score 0
T or F? In order for work to take place, there must be a force applied on the object and the object must move.
30
True
False
Who knows?
20 questions
Q.
A method of separation that relies on different boiling points of substances and uses a condenser to convert one of the substances from gas back to liquid is ...
1
45 sec
Q.
T or F? In order for work to take place, there must be a force applied on the object and the object must move.
2
30 sec
Q.
T or F? Bond formation is an exothermic process while the breaking of bonds is an endothermic process.
3
30 sec
Q.
Which of the following is FALSE about the Kelvin scale?
4
45 sec
Q.
Which of the following would NOT be considered "volumetric"?
5
30 sec
Q.
How many significant figures SHOULD be in the answer to this problem? 15.5 x 27.3 x 5.4 ?
6
30 sec
Q.
One of the postulates in Dalton's atomic theory is "Atoms of one element cannot be changed into atoms of a different element by chemical reactions; atoms are neither created nor destroyed in chemical reactions". This postulate is better known as...
7
45 sec
Q.
An isotope of silver has an atomic weight of 110. How many neutrons would be found in this isotope?
8
45 sec
Q.
Element X has three isotopes: X-23 with an atomic mass of 22.99 amu; X-22 with an atomic mass of 21.98; and X-24 with an atomic mass of 23.99. If element X has an average weighted atomic mass of 22.69, which isotope is most abundant?
9
60 sec
Q.
10
45 sec
Q.
T or F? An ion of magnesium has 11 electrons.
11
30 sec
Q.
The correct name of SnS is ...
12
30 sec
Q.
Which of the following is ALWAYS true about combustion reactions?
13
30 sec
Q.
Which of the following statement is/are true about carbon?
14
45 sec
Q.
Which of the following is NOT true about solid ionic compounds when they are placed in water?
15
45 sec
Q.
Ammonium nitrate is a common ionic compound. Which of the following IS true about this compound (assume we are reacting aqueous ammonium nitrate with another aqueous ionic compound).
16
45 sec
Q.
Which of the following is NOT a name for a reaction between two aqueous ionic compounds?
17
30 sec
Q.
T or F? Net ionic equations MUST include charges of each ion and full notation.
18
30 sec
Q.
Which of the following is NOT a strong acid?
19
30 sec
Q.
What is the oxidation number of sulfur in sodium sulfite?
