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15
×
What temperature is -10°C on the Fahrenheit scale?
14°F
-18°F
263°F
26°F
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15
×
The smallest amount of an element that retains that element's characteristics is the _____
proton.
atom.
electron.
molecule.
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15
×
An atom with 3 valence electrons will most likely ________
gain three electrons.
lost five electrons.
lose three electrons.
gain five electrons.
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heart
Other team wins 5 points!
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shark
Other team loses 10 points!
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fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
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15
×
Another name for atomic mass unit (amu) is the _______
kekule.
avogadro.
mendeleev.
dalton.
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15
×
For the isotope 71Ga, Z = __ and A =__.
71; 40
31; 71
31; 40
71; 31
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15
×
Which choice best describes the degree of uncertainty in the measurement 4.0032 g?
The quantity is exact.
The measurement is between 4.0031 and 4.0033 g.
The measurement is between 4.002 and 4.004 g.
The measurement is between 3.99 and 4.01 g.
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boom
Lose 50 points!
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seesaw
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gift
Win 25 points!
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baam
Lose 25 points!
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15
×
How many calories are released when 500 g of water cools from 95.0°C to 25.0°C?
1.25 Ã 10^4 cal
70.0 cal
3.50 Ã 10^4 cal
4.75 Ã 10^4 cal
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15
×
What is the formula of a compound formed by the ions M^2+ and X^3-?
M2X
M2X3
M3X2
MX3
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