science unit 2

Question 1

density

Answer 1

Mass per unit volume

Question 2

dissolve

Answer 2

to make a solution by mixing a solid with a liquid

Question 3

logical

Answer 3

a reasonable explanation

Question 4

Molecule

Answer 4

2 or more atoms joined together the smallest part of a compound

Question 5

physical property

Answer 5

a characteristic of a substance that can be observed and measured without changing the identity and composition of the substance for example (ie) phases of matter solid liquid gas

Question 6

rate

Answer 6

the change in a measured value per unit of time

Question 7

Solubility

Answer 7

the amount of solid that will dissolve in a give liquid at a given time

Question 8

surface tension

Answer 8

the elastic like force of attraction that allows the liquid to form beads on a substance

Question 9

solution

Answer 9

a mixture of two substances in which the solid breaks down into the smallest particle of the substance solutions are clear and each substance retains its original chemical and physical property’s

Question 10

viscosity

Answer 10

the resistance of liquid to flow it is a property that depends on the size of the molecules the forces of attraction and the tempature