Lab Report Identifying Physical And Chemical

Lab Report: Identifying Physical and Chemical Changes
Nelson Science Perspectives 10 section 5.2

Amazing Student September 17, 2012 Mrs. Volkmann SNC 2D

Purpose:

To collect evidence and then use it to identify physical and chemical changes.

Hypothesis:

I predict the following:
Change 1 will be a chemical change
Change 2 will be a chemical change
Change 3 will be a physical change
Change 4 will be a chemical change
Change 5 will be a chemical change
Change 6 will be a physical change

Materials:

See textbook “Nelson Science Perspectives 10” page 180

Procedure:

See textbook “Nelson Science Perspectives 10” pages 180-181

Observations: (could be called “results” – don’t explain anything)

Change #
Summary
Description Before Change
Description Of Change
1
Magnesium ribbon (Mg) added to hydrochloric acid (HCl)
Mg – solid, metal, grey medium lustre, malleable, ductile, opaque

HCl – liquid, transparent, colourless, low viscosity, odourless

Test tube felt warm

bubbles
2
Burning splint placed near mouth of test tube
Mg ribbon disappearing
Liquid is still colourless and clear
Bubbles still rising through liquid.

“pop” sound when burning splint placed near mouth of test tube
3
Copper (II) sulfate (CuSO4) added to water
CuSO4 – solid, blue, powder, odourless, opaque

Water – liquid, colourless, transparent, low viscosity, odourless
CuSO4 dissolved in the water and created a blue solution (transparent, blue, low viscosity)
4
Steel wool added to CuSO4
Steel Wool – solid, grey, metal, ductile, medium lustre

CuSO4 – liquid, blue, transparent, low viscosity
Test tube felt warm

Dark red solid appears as steel wool disappears

Solution in test tube turns greenish blue (still transparent, low viscosity)
5
Add sodium hydroxide (NaOH) to test tube from change 4

NEXT, add hydrochloric acid (HCl)
Test tube has greenish blue, transparent, liquid

NaOH – liquid, transparent, colourless, low viscosity, odourless

HCl – liquid, transparent, colourless,