Periodic Table Trends and Chemical Reactions Review

What does each bead represent in the model?

• atoms

• molecule

• cells

• protons

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NGSS.MS-PS1-1

How many atoms in 2NaBO₃?

• 2

• 3

• 10

• 8

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NGSS.MS-PS1-1

How many molecules in 2NaBO₃?

• 2

• 3

• 10

• 12

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NGSS.MS-PS1-1

How many elements in 2NaBO₃?

• 2

• 3

• 10

• 4

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NGSS.MS-PS1-1

How many molecules of water are produced when calcium hydroxide reacts with nitric acid?

Ca(OH)₂ +2HNO₃ -----> Ca(NO₃)_{2 +} 2H₂O

• 1

• 2

• 5

• none of these

Tags

NGSS.MS-PS1-2

In the reaction between potassium hydroxide (KOH) and sulfuric acid (H₂SO₄), which element cannot be part of the product?

• Hydrogen

• Sulfur

• Silicon

• Potassium

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NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The number of atoms of an element in a chemical formula is represented with

• a letter

• a subscript number

• a coefficient

• a formula

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NGSS.MS-PS1-1

What are the total number of atoms for the product side of the following chemical equation?

2C₂H₂ + 5O₂ -----> 4CO₂ + 2H₂O

• 6

• 12

• 18

• none of these

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

If an atom has 4 protons and 5 neutrons, what is the atomic mass?

• 4

• 5

• 9

• not enough information

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NGSS.MS-PS1-1

Which of the following correctly lists the subatomic particles in a neutral atom of bromine? (atomic number 35)

• 35 protons, 35 neutrons, 45 electrons

• 35 protons, 45 neutrons, 35 electrons

• 35 protons, 80 neutrons, 35 electrons

• 35 protons, 35 neutrons, 80 electrons

Tags

NGSS.MS-PS1-1