Compounds

What type of model is shown?

• a structural formula

• a chemical formula

• a space-filling model

• a ball-and-stick model

Tags

NGSS.MS-PS1-1

What type of model is shown?

• a structural formula

• a chemical formula

• a space-filling model

• a ball-and-stick model

Tags

NGSS.MS-PS1-1

In what way is Model B better than Model A?

• Model B shows the types of elements in the compound, but Model A does not.

• Model B shows the three-dimensional shape of the molecule, but Model A does not.

• Model B shows how the atoms in the molecule are connected, but Model A does not.

• Model B shows the number of atoms of each element in the molecule, but Model A does not.

Tags

NGSS.MS-PS1-1

What is the chemical formula for the molecule modeled?

• CHO

• C₄H₁₁O₂

• C₆H₁₂O₂

• C₆H₉O

Tags

NGSS.MS-PS1-1

How many atoms of nitrogen are in the chemical formula Ni(NO₃)₂?

• 2

• 1

• 6

• 3

Tags

NGSS.MS-PS1-1

There are ____ atoms of oxygen in the chemical formula 2Ca(ClO₂)₂.

Tags

NGSS.MS-PS1-1

How many atoms of each element are in the chemical formula P₂O₅?

• 2 phosphorus and 5 oxygen

• 5 phosphorus and 2 oxygen

• 1 phosphorus and 5 oxygen

• 2 phosphorus and 1 oxygen

Tags

NGSS.MS-PS1-1

How many atoms of each element are in the chemical formula Ca(OH)₂?

• 1 calcium, 1 oxygen, and 1 hydrogen

• 1 calcium, 2 oxygen, and 2 hydrogen

• 2 calcium, 1 oxygen, and 2 hydrogen

• 2 calcium, 2 oxygen, and 2 hydrogen

Tags

NGSS.MS-PS1-1

How many atoms of each element are in 4Na₃PO₄?

• 3 sodium, 1 phosphorus, 4 oxygen

• 4 sodium, 4 phosphorus, 4 oxygen

• 12 sodium, 1 phosphorus, 4 oxygen

• 12 sodium, 4 phosphorus, 16 oxygen

Tags

NGSS.MS-PS1-1

What does the chemical formula CaCl₂ show about the compound it represents?

• It is made up of one element.

• It is made up of two elements.

• It is made up of three elements.

• It is made up of four elements.

Tags

NGSS.MS-PS1-1