Think Up Questions: Chemical Formulas

How many different elements are in ?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

Which formulas above represent a molecule with 6 atoms?

Select 2

• C3H8O

• MgSO4

• NH4OH

• C2H4O2

• NaHCO3

Tags

NGSS.MS-PS1-1

A group of students discusses how to determine the number of atoms in each substance. Student 1 states that the coefficient determines the number of atoms in each substance. Student 2 says the subscripts determine the number of atoms in each substance and student 3 thinks the chemical symbols determine the number of atoms in each substance. Which student is correct?

• Student 1

• Students 1 and 2

• Student 2

• Students 2 and 3

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in the following chemical formula? Al2(CO3)3

• 3

• 6

• 9

• 18

Tags

NGSS.MS-PS1-1

What is the best description of this molecule of caffeine? C8H10N4O2

• Eight atoms of carbon, ten atoms of hydrogen, and two atoms of oxygen

• Eight atoms of carbon, ten atoms of hydrogen, four atoms of nitrogen, and two atoms of oxygen

• Eight atoms of carbon, ten atoms of hydrogen, two atoms of nitrogen, and four atoms of oxygen

• Eight atoms of carbon, ten atoms of hydrogen, and six atoms of oxygen

Tags

NGSS.MS-PS1-1

According to the table, which chemical formula correctly represents the atoms in zinc phosphate?

• Zn₃(PO₄)₂

• Zn₃(PO₄)₂

• Zn₂P₂O₃

• Zn₃(PO₂)₄

Tags

NGSS.MS-PS1-1

How many different elements are part of one molecule of C₁₀H₇Cl₈OP?

• 19

• 20

• 21

• None of the above

Tags

NGSS.MS-PS1-1

What information best completes the diagram? 8.2(C)

• Number of compounds

• Located in front of the chemical symbols

• Number of molecules

• Located behind the chemical symbols

A student wants to create a model of NaHCO₃ (baking soda). How many LEGO® blocks of each color are needed for the model?

• Yellow: 1, Black: 1, Green: 0, Blue: 0, White: 1, Red: 3

• Yellow: 2, Black: 1, Green: 1, Blue: 1, White: 1, Red: 1

• Yellow: 1, Black: 2, Green: 1, Blue: 0, White: 1, Red: 1

• Yellow: 1, Black: 1, Green: 1, Blue: 0, White: 2, Red: 1

Tags

NGSS.MS-PS1-1

How many nitrogen atoms are there?

• 4

• 8

• 10

• 20

Tags

NGSS.MS-PS1-1