Molecules and compounds and bonds

What is a molecule?

• two elements bonded together (sharing electrons)

• a mixture of different substances

• smallest individual particles

• salt mixed in water

Tags

NGSS.MS-PS1-1

What is a compound?

• Two different elements bonded together.

• Two of the same elements bonded together.

• A mixture of different substances.

• Two substances stuck together with glue.

Tags

NGSS.MS-PS1-1

What does a subscript and coefficient tell us in a chemical formula?

• The number of elements

• The number of atoms

• The amount of mass

• The year

How does a chemical equation show that if follows the law of conservation of mass?

• same Number of people on each side

• all lower cases

• The same number of mass and elements on each side of the equation

• Tacos

Is H20 a compound

• yes

• No

How many atoms are in H20+PNa=PH2+NaO

• 4

• 6

• 1

• 5

What does the law of conservation of mass state

• Mass cannot be created nor destroyed

• Mass is a concept

• Atoms are actually fake

• elements don’t contain mass

Covalent bond forms between....

• Nonmetals
• Metals
• Nonmetal and a Metal
• Metal and a Nonmetal

What is the chemical formula for dinitrogen trioxide?

• N₂O₃
• NO₂
• N₃O
• N₂O₄

Tags

NGSS.HS-PS1-1

Ionic Bonding involves...

• The transfer of protons
• The transfer of nuetrons 
• The transfer of electrons
• None Of the above

Tags

NGSS.HS-PS1-2