Answer:

1. cardboard

(how to change the size of the object?)

— you can change the size of cardboard by cutting It

(effects of the force applied)

— when a force acts on an object, the object may change shape by bending, stretching or compressing, or a combination of all three shape changes

2. eggshell

(how to change the size of the object?)

— you will crushed it into pieces

(effects of the force applied)

— the egg striking the floor or ground is greater than the force that the egg shell can exert on itself to keep its shape, the egg will break. Some eggs are stronger than others, depending on how thick the shell is

3. bar soap

(how to change the size of the object?)

— you will submerge it on water so the size will change

(effects of the force applied)

— the test of soap on distilled water gives the actual strength of the soaps cleaning capacity. the second test with tap water tests the effect of Ca 2+ and Mg 2+ salts on their foaming capacities.

4. cracker biscuit

(how to change the size of the object?)

— divide it into 2 pieces

(effects of the force applied)

— leave in water or melt, it changes to liquid

5. rubber slipper

(how to change the size of the object?)

— cut it into 2

(effects of the force applied)

— friction