Chemical Compounds

What is a chemical compound?

• A mixture of two or more substances

• A substance made of only one element

• A substance made of two or more elements that are chemically bonded together in fixed proportions

• A process by which elements bond

What does a subscript in a chemical formula indicate?

• The number of atoms of that element in one unit of the compound

• The number of molecules in a compound

• The total weight of the element in the compound

• The charge of the atom in the compound

What is the chemical formula for water?

• H2O2

• NaCl

• H2O

• CO2

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in one unit of glucose?

Tags

NGSS.HS-LS1-6

What is the ratio of sodium to chloride ions in sodium chloride?

• 1:3

• 1:1

• 1:2

• 2:1

Tags

NGSS.MS-PS1-1

What is a compound?

(a)  

• Large organic molecule made of carbon,

  hydrogen, oxygen, nitrogen, and sometimes sulfur.

• Two or more elements that are chemically combined.
• An energy-rich organic compound

  made of the elements carbon, hydrogen, and

  oxygen.

• Energy-rich organic compound, such as a fat, oil,

  or wax, that is made of carbon, hydrogen, and oxygen.

Tags

NGSS.HS-LS1-6

what is an Element?

• Any substance that cannot be broken down

  into simpler substances.

• Two or more elements that are chemically

  combined.

• An energy-rich organic compound

  made of the elements carbon, hydrogen, and

  oxygen.

• Large organic molecule made of carbon,

  hydrogen, oxygen, nitrogen, and sometimes sulfur.

Tags

NGSS.MS-PS1-1

H2O2

• water

• hydrogen peroxide

• silicon dioxide

• sodium bicarbonate

He

• hydrogen

• helium

• iron

• gold

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-1