science

Question 1

element

Answer 1

Simplest form of matter, contains only one kind of matter that has those characteristics,
Smallest piece is atom

Question 2

mass

Answer 2

amount of matter in an object

Question 3

weight

Answer 3

Weight is the measurement of force of gravity on an object. Weight will change depending on force of gravity (on moon, in space). Mass will not change.

Question 4

Exothermic

Answer 4

release of energy during a chemical or physical change of matter.

Question 5

Endothermic

Answer 5

absorbing of energy during a chemical or physical change of matter

Question 6

Two rows below table

Answer 6

Rare earth metals. They are actually part of the transition metals in the middle of the periodic table. However, if they are included in the table, the table would be too long. So, they are placed below the table to shorten the table.

Question 7

Ways to separate mixtures

Answer 7

Evaporation: letting mixture sit and let water leave as a gas, leaving behind solids and other liquids
Filtration: using a filter to separate a solid from a liquid or smaller molecules from larger molecules
Magnetic attraction: using a magnet to remove iron compounds from the mixture
Distillation: boiling one liquid off as another liquid remains behind
Physical/by hand: picking apart or pouring apart mixtures

Question 8

Units of mass

Answer 8

Metric: grams (g), kilograms (kg)

American standard: pounds (lb), ounces (oz)

Question 9

Volume

Answer 9

Amount of space an object takes up

Question 10

Density

Answer 10

compactness of a substance.