Chemistry

Balancing Equations

100

H2 + ____ Cl2 → ____ HCl

H2 + ____ Cl2 → ____ 2HCl

200

____ BaCl2 + ____ Na2SO4 → ____ NaCl + ____ BaSO4

____ BaCl2 + ____ Na2SO4 → ____2NaCl + ____ BaSO4

300

___ Na2CO3 + ____ CaCl2 →____ CaCO3 + ____ NaCl

___ Na2CO3 + ____ CaCl2 →____ CaCO3 + ____2NaCl

400

K3PO4 + ____ MgSO4 → ____ Mg3(PO4)2 + ____ K2SO4

2K3PO4 + ____ 3MgSO4 → ____ Mg3(PO4)2 + ____ 3K2SO4

500

____ C6H6 + ____ O2 → ____ CO2 + ____ H2O

____ 2C6H6 + ____ 15O2 → ____ 12CO2 + ____ 6H2O

Physical VS. Chemical

100

Burning a match

Chemical

200

Baking a cake

Chemical

300

Tieing your shoes

Physical

400

Shaking a soda bottle and having it explode

Physical

500

Water evaporating

Physical

Site The Evidence

100

Chemical change- dying hair

permanent color change

200

Chemical change: Cooking bacon

Permanent color change releasing a gas - Carbon dioxide

300

____ NaOH + ____ CuSO4 → ____ Na2SO4 + ____ Cu(OH)2 Follow the law of conservation?

Na- 1 Na- 2 O- 5 O- 7 H- 1 H- 2 Cu- 1 Cu- 1 S- 1 S- 1 No, it does not follow the law- the matter is not transferred

400

Physical Change- making jello

phase change (freezing), substances stay the same

500

Y(NO3)2 + GaPO4 ---> ____ YPO4 + ____ Ga(NO3)2 Does this equation demonstrate the law of conservation? Show evidence.

Y-1 Y- 1 N-2 N- 2 O-10 O-10 Ga-1 Ga-1 P-1 P- 1 This equation does show the law of conservation because the atoms transferred equally.

Types of Reactions

100

____ Fe2O3 → ____ Fe + ____ O2

Decomposition

200

____ Sb + ____ S8 → ____ Sb2S5

Synthesis

300

N2 + H2 ---> NH3

Synthesis

400

____ Fe + ____ HCl → ____ FeCl3 + ____ H2

Single Replacement

500

____ NH4OH + ____ FeCl3 → ____ NH4Cl + ____ Fe(OH)3

Double Replacement

Potluck

100

The capital of New Hampshire

Concord

200

The symbol for Iron

Fe

300

The number of states that border Mexico

Five

400

Planet that is closest to the Sun

Mercury

500

Regular polygon with 8 sides

Octagon