2.2 - What is matter?

Question 1

Element

Answer 1

a fundamental substance that has a unique set of properties and cannot be broken down into simpler substances by chemical means.

Question 2

Matter

Answer 2

Anything that has mass and takes up space

Question 3

Compounds

Answer 3

combinations of two or more different elements held together in fixed proportions.

Question 4

Atom

Answer 4

the smallest unit of matter into which an element can be divided and still retain its chemical properties.

Question 5

Atomic Number

Answer 5

the number of protons in the nucleus of an atom.

Question 6

Acid

Answer 6

a chemical characteristic that helps determine how a substance dissolved in water will interact with and affect its environment.

Question 7

pH

Answer 7

measure of acidity based on the amount of hydrogen ions (H+) and hydroxide ions (OH-) contained in a particular volume of a solution.

Question 8

Molecule

Answer 8

a combination of two or more atoms of the same or different elements held together by forces called chemical bonds.

Question 9

Organic compounds

Answer 9

contain at least two carbon atoms combined with atoms of one or more other elements.

Question 10

Matter Quality

Answer 10

a measure of how useful a form of matter is to humans as a resource, based on its availability and concentration

Question 11

High-quality matter

Answer 11

highly concentrated, is typically found near the earth’s surface, and has great potential for use as a resource.

Question 12

Low-quality matter

Answer 12

highly concentrated, is often located deep underground or dispersed in the ocean or atmosphere, and usually has little potential for use as a resource.

Question 13

Order of life

Answer 13

human body, human cell, nucleus, chromosome, DNA, genes.