Chem assignment 3

Experiment 3 PROPERTIES AND CHANGES OF MATTER

Data Collection and Results Pages Name: __________________________ Date: ___________________

Observation

Type of Change (Physical or Chemical)

Reason(s) (for deciding the type of change)

I2 + heat

Mg + heat

Color, odor, and crystal structure of CaCl2

Color, odor, and crystal structure of CaCO3

Experiment 3: PROPERTIES & CHANGES

2

CaCl2 + H2O

CaCO3 + H2O

CaCl2 + 15% HCl

CaCO3 + 15% HCl

Mixture + H2O

Substance A (product after evaporation of water)

Experiment 3: PROPERTIES & CHANGES

3

(continued next page)

Residue + 15% HCl

Substance B (after evaporation of acid solution)

Substance A + 15% HCl

Substance B + 15% HCl

Experiment 3: PROPERTIES & CHANGES

4

Substance Identity (CaCl2 or CaCO3 ?)

Step 8 – Filtrate

Step 8 – Residue

Step 17 – Substance A

Step 17 – Substance B