Pre-unit 7 video notes

Based on his definition of a balanced equation, is the example equation balanced?  

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Using the visual representation of the equation, is it balanced?  

• Yes

• No

Which atom is unbalanced in this equation?  

• oxygen

• hydrogen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Making this change causes the hydrogen to be unbalanced?  How could you adjust this?  

• adding one more hydrogen (H2) compound

• adding two more hydrogen (H2) compounds

• cutting the oxygen (O2) compound in half

• removing the water (H2O) compound we just added

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The only way to balance an equation is to modify the:

• subscripts

• coefficients

• reactants only

• products only

Which of the following combinations of coefficients would produce a balanced equation?  

• 1,3,2

• 1, 1.5, 2

• 1, 1, 2

Tags

NGSS.MS-PS1-5