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