NGSS Chemistry Fall Final Review

1.  The number of significant figures in the measurement 170.040 km is ___.

• Three
• Four
• Five
• Six

3.  A sample of bismuth has a mass of 343g and a volume of 35.0cm³. What is the density of bismuth?

• a.  0.102 g/cm³ 
• b. 9.80 g/cm³ 
• c. 378 g/cm³ 
• d. 1.20 x 10⁴ g/cm³

5. A student determined the density of aluminum by averaging the results of three density calculations. Each value was different, but the average was equal to the accepted value for aluminum’s density. The results of this investigation are best described as ______.

• a.  Accurate, but not precise.
• a.  Precise, but not accurate.
• a.  Both precise and accurate.
• a.  Neither precise nor accurate.

6.  Expressed in scientific notation, 0.0930 m is ___.

•       93 x 10³ m.
•        9.3 x 10^-3m.
•      9.30 x 10^-2 m.
•      9.30 x 10⁴ m.

12.  Which element does the following configuration represent?  1s²,2s²,2p⁶,3s²,3p⁵

•    Phosphorus
•      Chlorine
•    Silicon
•     Argon

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13.  What is the correct electron configuration for Calcium?

• a.  1s²,2s²,2p⁶,3s²,3p⁶,4s¹
• a.  1s²,2s²,2p⁶,3s²,3p⁶,4s²
• a.  1s²,2s²,2p⁶,3s²,3p⁵,4s²
• 1s²,2s²,2p⁶,3s³,3p⁵,4s¹

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NGSS.HS-PS1-2

1s²2s²2p⁶3s²3p¹
This electron configuration belongs to...

• Aluminum
• Boron
• Gallium
• Carbon

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NGSS.HS-PS1-1

The name of group 17.

• Alkali metals
• Noble Gases
• Alkaline Earth metals
• Halogens

The atom with the largest ionization energy.

• Francium
• Fluorine
• Argon
• Radon

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NGSS.HS-PS1-2

Noble gases don't react with anything else because...

• they are too large
• they are gases
• they have 8 valence electrons
• they need to gain 1 valence electron

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NGSS.HS-PS1-2