Chemistry: Chemical Reactions

What coefficients does ____H2 + ____O2 -> ____H2O need to be balanced?

• 1,1,1

• 2,2,2

• 2,1,2

• none of the above

Tags

NGSS.HS-PS1-7

How many hydrogen atoms?

• 1

• 2

• 6

• not enough information

Tags

NGSS.HS-PS1-7

How many hydrogen atoms?

• 1

• 5

• 2

• 6

What type of reaction follows the form AX + BY -> AY + BX?

• single replacement cationinc

• double replacement

• synthesis

• decomposition

What type of reaction is occurring in the image?

• combustion

• synthesis

• explosion

• decomposition

Which of the following will always be in a combustion reaction? There is more than one answer.

• carbon

• nitrogen

• beryllium

When balancing a combustion reaction what atoms do we balance second?

• hydrogen

• water

• carbon

• oxygen

A double replacement reaction produces either, a gas, water, or a ______________.

• precipitate

• isotopes

• compounds

• new elements

Balance the equation ___Fe(s) + ___CuSO4(aq) -> ____FeSO4(aq) + ____Cu(s)

• 1,2,2,1

• 2,3,6,3

• 2,4,2,4

• already balnced

Tags

NGSS.HS-PS1-7

What happens to the atoms in a chemical reaction?

• they are created

• they are converted to energy

• they are destroyed

• they are rearranged

Tags

NGSS.HS-PS1-7