PTE & Conservation of Mass

What is Helium's atomic number?

• 1

• 2

• 3

• 4

Chlorine

• C

• Ch

• Cl

• Co

Tags

NGSS.MS-PS1-1

Sodium

• S

• So

• Sm

• Na

Calcium

• Ca

• C

• K

• Cl

Tags

NGSS.MS-PS1-1

Nitrogen

• Na

• N

• Ni

• No

Tags

NGSS.MS-PS1-1

Hydrogen

• H

• Hy

• Hd

• Hn

Tags

NGSS.MS-PS1-1

Oxygen

• O

• Ox

• Oy

• Og

Tags

NGSS.MS-PS1-1

Carbon

• C

• Ca

• Co

• Cn

Tags

NGSS.MS-PS1-1

Compare the reactants and products in the diagram.  What do you notice?  Check all that apply.

• The reactant molecules are different from the product molecules.

• The reactant atoms are different from the product atoms

• The total number of reactant molecules is different from the total number of product molecules. 

• The atoms become associated together in new arrangements.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

• True

• False

Tags

NGSS.MS-PS1-5