2025 Chemistry Fall Semester Exam

What is the symbol for the element zinc?

• Z

• Zn

• QI

• Zi

What are the main group elements of the Periodic Table?

• 1,2

• 1,2,3,

• 1,2,13-18

• 3-12

How many groups are there in the periodic table?

• 4

• 18

• 6

• 12

How many periods are there on the modern periodic table of elements?

• 4

• 5

• 6

• 7

What is a compound?

• A single element

• Two or more elements chemically combined

• A mixture of gases

• A type of molecule with only one atom

Tags

NGSS.MS-PS1-1

What is the octet rule?

• Atoms will gain, lose, or share electrons in order to have 8 electrons in their outer shell

• Atoms will always have 8 protons

• Atoms will form 8 bonds

• Atoms will have 8 neutrons in their nucleus

Tags

NGSS.HS-PS1-1

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What is a chemical bond?

• A type of redox reaction

• A force that holds atoms together in a compound

• A process of breaking down compounds

• A method of measuring atomic mass

Tags

NGSS.HS-PS1-1

What is an ionic bond?

• When atoms share electrons equally

• When atoms transfer electrons in order to be stable

• When atoms lose protons

• When atoms gain neutrons

Tags

NGSS.HS-PS1-1

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What are ions?

• Neutral atoms

• Charged atoms that have gained or lost electrons

• Atoms with extra protons

• Atoms with extra neutrons

Tags

NGSS.MS-PS1-5

What is a polyatomic ion?

• A single atom with a charge

• A positively or negatively charged, covalently bonded group of atoms

• A neutral group of atoms

• A metal bonded to a nonmetal