Question

1. Kenya has a pile of salt on the counter. She uses a pinch of it for a meal. Which of the following physical properties of the salt changes?

Density

Shape

Solubility

Thermal Conductivity


2. A substance that is dissolved in another substance is which of the following?

Saturation
Solubility
Solute
Solvent

Answer 1

The physical properties of the salt that change is the;

D. Thermal Conductivity

The density and shape of salt doesn't change when we touch it, and salt doesn't dissolve when we touch it either so it's NOT shape, density or solubility.

A substance that is dissolved in another substance is a;

D. Solvent

A solute is a substance dissolved in another substance, that is the solvent.

Answer 2

Problem One

The only property that will change is the shape. Ask anyone what a pinch of salt is and you ought to get many answers. Most people will try and pick it up and put in in the palm of their hand. So the shape is going from "pile" to "scattered."

The density will change if all the granuals are not kept together. That means that the volume will increase when scattered. It is another one of those ambiguous questions. So what to do.

I think you are intended to pick shape, but don't be surprised if it is density. You can't pick with a question like this one.

Problem Two

• It is not saturation. That means the solvent can't hold any more of what is being put in it.
• It is not solubility. That means that the solvent and the solute are mixable or produce a chemically homogeneous result.
• The solvent is what you put the solute in. Solvent is not the answer.

Solute is