Physical Science 9 Final Exam Review

A substance has a mass of 12.9 g and a volume of 8 cm³. What is the mass of a 10.5 cm³ sample of the same substance?

• 1.61 g
• 16.91 g
• 12.6 g
• 0.15 g

A scientists finds an atom with mass of 16 and 8 protons in it's nucleus. What is the element?

• Sulfur (S)
• Nitrogen (N)
• Oxygen (O)
• Chromium (Cr)

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NGSS.HS-PS1-1

How many electrons does a neutral atom of chlorine (Cl) have?

• 35
• 36
• 17
• 18

Which element has similar properties to Neon?

• Argon
• Oxygen
• Fluorine
• Lithium

Tags

NGSS.HS-PS1-1

Elements in group 15 have how many valence electrons?

• 15
• 5
• 8
• 3

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NGSS.HS-PS1-1

The __________ of an atom is the sum of the protons and neutrons in the nucleus of that atom.

• mass number
• atomic number 
• atomic weuight
• isotope weight

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NGSS.HS-PS1-8

Which of these phrases best describes an atom?

• a positive nucleus surrounded by a hard negative shell
• a positive nucleus surrounded by a cloud of negative charges
• a hard sphere with postive and negative charges on the outside
• a negative nucleus surrounded by protons and neutrons

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

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NGSS.HS-PS1-1

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵
• 1s² 2s² 2p⁶ 3s² 3p⁶
• 1s² 2s² 2p⁶ 3s² 3p⁷

Tags

NGSS.HS-PS1-1