Please remember to write your answer in complete sentences. For
calculations, the question is not neccesary, but showing all work is
required. Only 1/2 credit will be earned without the preceeding requirements.
DUE 11/17 ** DUE 11/17 ** DUE 11/17 ** DUE 11/17 ** DUE 11/17 ** DUE 11/17 ** DUE 11/17
Identify each of the following as a Physical or Chemical Change.
Put a P next to Physical Changes Put a C next to Chemical Changes
********YOU MUST WRITE THE QUESTION FOR FULL CREDIT********
1. A piece of wood burns to form ash. _________
2. Water evaporates into steam. _________
3. A piece of cork is cut in half. _________
4. A bicycle chain rusts. _________
5. Food is digested in the stomach. _________
6. Water is absorbed by a paper towel. _________
7. Hydrochloric Acid reacts with zinc. _________
8. A piece of an apple rots on the ground. _________
9. A tire is inflated with air. _________
10. A plant turns sunlight, CO2, and water
into sugar and oxygen. _________
11. Sugar dissolves in water. _________
12. Eggs turn into an omelette. _________
13. Milk sours. _________
14. A popsicle melts. _________
15. Turning brownie mix into brownies. _________
Complete the following table concerning pure substances and mixtures.
********YOU MUST WRITE THE CHART FOR FULL CREDIT********
! ! If Pure ! If Mixture
Substance ! Pure or Mixture ! Element or Compound ! Homogenous or Heterogeneous
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
salt (NaCl) ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
stainless steel ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
river water ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
iron (Fe) ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
urine ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
tortilla soup ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
nitrogen (N2) ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
carbon dioxide (CO2) ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
air ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
lithium (Li) ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
salsa ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
octane (C8H18) ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Kool Aid ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
iodine (I2) ! ! !
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
DUE 11/19**DUE 11/19**DUE 11/19**DUE 11/19**DUE 11/19**DUE 11/19**DUE 11/19**
Write Ionic or Covalent next to each compound.
********YOU MUST WRITE THE COMPOUND FOR FULL CREDIT********
1) NaBr ______________________________________________
2) Ca(C2H3O2)2 ______________________________________________
3) P2O5 ______________________________________________
4) Ti(SO4)2 ______________________________________________
5) FePO4 ______________________________________________
6) K3N ______________________________________________
7) SO2 ______________________________________________
8) CuOH ______________________________________________
9) Zn(NO2)2 ______________________________________________
10) V2S3 ______________________________________________