Question

.a).wooden block sinks in water but a wooden plank of same weight floats-Reasonout

(b)What is density?

(C)Why some substances float while other sink in water?

(d)Distinguish between solubility and floatation?​

Answer 1

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• wooden block sinks in water but a wooden plank of same weight floats-Reasonout

a) Wood that is less dense and floats has big openings. Wood that sinks has very tiny openings. The ratio between weight and volume is called density. An object that is less dense than water can be held up by water, and so it floats

• What is density?

b)Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic metre.

• Why some substances float while other sink in water?

c)Different objects float at different levels in the water because as most regular objects are lowered into the surface of water, the upward push of the water steadily increases until it is in balance with the weight force of the object, and the object then continues floating at this level with the two forces in balance.

• Distinguish between solubility and floatation?

d)Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent. ... Insolubility is the inability to dissolve in a solid, liquid or gaseous solvent. Most often, the solvent is a liquid, which can be a pure substance or a mixture.

Answer 2

• wooden block sinks in water but a wooden plank of same weight floats-Reasonout

a) Wood that is less dense and floats has big openings. Wood that sinks has very tiny openings. The ratio between weight and volume is called density. An object that is less dense than water can be held up by water, and so it floats

• What is density?

b)Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... For example, the density of air is 1.2 kilograms per cubic metre.

Why some substances float while other sink in water?

c)Different objects float at different levels in the water because as most regular objects are lowered into the surface of water, the upward push of the water steadily increases until it is in balance with the weight force of the object, and the object then continues floating at this level with the two forces in balance.

• Distinguish between solubility and floatation?

d)Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent. ... Insolubility is the inability to dissolve in a solid, liquid or gaseous solvent. Most often, the solvent is a liquid, which can be a pure substance or a mixture.