Chapter 12 Basics Of Chemistry

Question 1

is the science that deals with the composition, structures, and properties of matter and how matter changes under different conditions.

Answer 1

Chemistry

Question 2

is the study of substances that contain the element carbon.

Answer 2

Organic Chemistry

Question 3

a term that is often used to mean safe or natural because of its association with living things such as foods or food ingredients, but not all ______ substances are natural, healthy, or safe.

Answer 3

Organic

Question 4

All living things or things that were once alive, whether they are plants or animals, contain _______

Answer 4

Carbon

Question 5

_____ can contain other elements like nitrogen and oxygen, but it is the bond between carbon and hydrogen that make it organic.

Answer 5

Organic Compounds

Question 6

Organic substances that contain ______ and ______ can burn.

Answer 6

Carbon and Hydrogen

Question 7

Gasoline, motor oil, plastics, synthetic fibers, pesticides, and fertilizers are all examples of _________

Answer 7

Organic Substances

Question 8

All hair color products, chemical texturizers, shampoos, conditioners, styling aids, nail enhancements, and skin care products are examples of ___________

Answer 8

Organic Chemicals

Question 9

is the study of substances that do not contain the element carbon but may contain the element hydrogen.

Answer 9

Inorganic Chemistry

Question 10

______are not and never were alive and they do not burn because they do not contain the element carbon.

Answer 10

Inorganic Substances

Question 11

Metals, minerals, glass, water, and air are ______. Pure water and oxygen are also ______, yet they are essential to life.

Answer 11

Inorganic Substances

Question 12

Hydrogen peroxide, hydroxide hair relaxers, titanium dioxide, and zinc oxide in sun protection creams are example of _______

Answer 12

Inorganic Substances

Question 13

Any substance that occupies space and has mass (weight).

Answer 13

Matter

Question 14

All ______ has physical and chemical properties and exists in the form of a solid, liquid, or gas.

Answer 14

Matter

Question 15

Since _____is made form chemicals, everything made of matter is a chemical.

Answer 15

Matter

Question 16

Matter has ________ that we can touch, taste, smell, or see

Answer 16

Physical Properties

Question 17

Everything that you touch and see, with the exemption of ______ and _______, is matter.

Answer 17

light and electricity

Question 18

All matter is made up of _______. You can see visible light and light that electrical sparks create, but these are not forms of matter.

Answer 18

Chemicals

Question 19

Light and electricity are forms of _______, and ______ is not matter.

Answer 19

energy

Question 20

Everything known to exist in the universe is either made of _______ or ________. There are no exemptions to this rule.

Answer 20

energy or matter

Question 21

______ does not occupy space or have mass.

Answer 21

Energy

Question 22

The simplest form of chemical matter. It cannot be broken down into a simpler substance without lose of identity.

Answer 22

Element

Question 23

There are ____ known elements today and of those ____ occur naturally and the rest are produced by synthetic methods from nuclear reactions. All matter in the universe is made up of those elements and they have their own distinct physical and chemical properties.

Answer 23

118 and 98

Question 24

When using the word ______ to describe something does not mean it is dangerous or harmful. Water and Air are 100 percent _______. Even the body is completely composed of ________.

Answer 24

Chemical And Chemicals

Question 25

The vast majority of chemicals you come into contact with are _____ and ______. When chemicals do have the potential to cause harm, manufacturers are required to describe that potential harm on the packaging or label.

Answer 25

safe and harmless

Question 26

There is no such thing as a _______ product, so do not be fooled by misleading marketing claims.

Answer 26

Chemical-free

Question 27

Each element is identified by a _____.

Answer 27

letter symbol

Question 28

O=____

Answer 28

Oxygen

Question 29

C=____

Answer 29

Carbon

Question 30

H=_____

Answer 30

Hydrogen

Question 31

N=_____

Answer 31

Nitrogen

Question 32

S=_____

Answer 32

Sulfur

Question 33

The ____________ contains the symbols for all the elements and can be found in chemistry textbooks or by searching the internet.

Answer 33

Periodic Table Of Elements

Question 34

The basic unit of matter with a nucleus at the center.

Answer 34

atom

Question 35

A negatively charged basic unit of matter that surrounds the nucleus and moves around the nucleus in orbits.

Answer 35

electrons (E)

Question 36

The nucleus consist of ______ (subatomic particles with a positive charge) and _______ (subatomic particles with no charge) and the number of _______ determines the element.

Answer 36

Protons (P) and Neutrons (N)

Question 37

Cannot be divided into simpler substances by ordinary chemical means.

Answer 37

Atoms

Question 38

A chemical combination of two or more atoms in definite (fixed) proportions. Just as words are made by combining letters, _____ are made by combining atoms.

Answer 38

molecule

Question 39

Water made from _____atoms and _______ atoms.

Answer 39

hydrogen and oxygen

Question 40

Carbon dioxide is made from _____ atoms and _____ atoms

Answer 40

Carbon and Oxygen

Question 41

Atmospheric oxygen and other chemical substances, such as _______ and ________ make up the air you breath.

Answer 41

Nitrogen and water vapor