And answer 1.water is an example of a mixture because it is made up of hydrogen oxygen adams bonded together true or false 2. which of these methods could be used to separate an insoluble solid from a soluble solid? a) multi in the mixture and then using a filter to separate out the soluble solid b) melting the mctier mixing it with water and then using a magnet to separate out the insoluble solid c) mixing the mixture with water and then using chromatography to separate the two dissolved solids d) mixing the mixer with water filtering out the insoluble solid and then evaporating the water to isolate the soluble water 3. which of the following correctly describes a mixture? a) the particles are chemically bonded together, and they retain their individual physical and chemical properties b) the particles are not chemically bonded, and they can only come by and in certain set ratios c) the particles do not retain their individual chemical properties, and they can only be separated by chemical means d) the particles have no set ratio for how to combine, and they can be separated by physical means

1. False

2. D

3. D

Explanation:

1. Water is not a mixture because a mixture is a substance that is made up of two or more different substance each with their unique characteristics.

2. In order to separate an insoluble solid from a soluble solid, just add water to the mixture and the soluble solid will dissolve. Filter off the insoluble solid and dry the residue. To recover the soluble solid, evaporate off the water using a suitable method.

3. A mixture is a combination of two or more substances that are not chemically combined with each other and can be separated by physical means.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

the answer is 0.8m.

by: nicholas