chemical formulas, equations, elements and their properties

What does a chemical formula show?

• The color of a compound

• Which elements are in a compound

• The taste of a compound

• The temperature of a compound

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NGSS.MS-PS1-1

How does a chemical formula indicate the number of atoms of each element?

• By using colors

• By using shapes

• By using subscripts

• By using arrows

What symbols are used in a chemical formula?

• Symbols from the Periodic Table

• Symbols from the alphabet

• Symbols from mathematics

• Symbols from music notes

In a chemical equation, where are the reactants typically found?

• To the right of the arrow

• To the left of the arrow

• Above the arrow

• Below the arrow

What does the subscript '2' in the chemical formula H₂O represent?

• Two oxygen atoms

• Two hydrogen atoms

• One hydrogen atom

• One oxygen atom

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NGSS.MS-PS1-1

In the chemical formula H₂O, what does the 'O' stand for?

• Oxygen

• Hydrogen

• Helium

• Carbon

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NGSS.MS-PS1-1

What is the mass of one molecule of water?

• 18.016 amu

• 17.008 amu

• 16.000 amu

• 20.000 amu

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NGSS.MS-PS1-1

What does the "C" represent in the chemical formula CO₂?

• Calcium

• Carbon

• Chlorine

• Copper

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NGSS.MS-PS1-1

In the chemical formula CO₂, what does the subscript "2" indicate?

• Two carbon atoms

• Two chlorine atoms

• Two oxygen atoms

• Two hydrogen atoms

Tags

NGSS.MS-PS1-1

How many total atoms are present in a molecule of CO₂?

• 2 atoms

• 3 atoms

• 4 atoms

• 5 atoms

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NGSS.MS-PS1-1