Question

write
te an
between a
in given
Changes
experiment to differentiate
Chemical and physical
process, objective
material required
Observation
Conclusion​

Answer 1

Answer:

The Law of Conservation of Mass states that mass is conserved in physical and chemical changes. Students explore this concept by taking initial masses, making predictions, and finding final masses of physical and chemical changes. Students observe water changing from ice to a liquid, a piece of cardboard being cut up, salt dissolving in water, Alka-Seltzer reacting in water, and water's physical property of cohesiveness being disrupted by soap.

These are the supplies needed for each group.

2 ice cubes

one balance with gram mass cubes (Gram mass cubes can be ordered from enasco.com TB16755M Set of 500 for $12.50) Balance or scales acceptable.

2 Ziploc bags

6 x 6 inch square of cardboard

scissors

2 tsp. of salt in a very small container or bag

100 ml graduated cylinder

small cup

spoon

1 Alka-Seltzer tablet

piece of wax paper

water squirt bottle or beaker with an eyedropper

toothpicks

container of Dawn detergent mixed in water

one petri dish

pepper...

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