Chemistry

Question 0

Matter

Answer 0

Matter is anything that has mass and volume

Question 1

Chemistry

Answer 1

The study of the composition of substances and the changes they undergo.

Question 2

Mass

Answer 2

Mass is the amount of matter in an object

Question 3

Volume

Answer 3

Volume is how much space and object takes up

Question 4

Solid

Answer 4

Atoms packed closely together vibrate only

Question 5

Liquid

Answer 5

Atoms packed closely together flow freely around each other

Question 6

Gas

Answer 6

Atoms loosely arranged so they can travel in out easily

Question 7

Plasma

Answer 7

Atoms exist in an excited state

Question 8

Bose Einstein condensation

Answer 8

Atoms at the coldest temperature possible in the universe

Question 9

Physical properties

Answer 9

Characteristics of a substance related to the physical nature of the material

Can be divided into three categories

Question 10

Physical changes

Answer 10

Involve change in size, shape, or state of matter without altering the substance’s chemical composition

Question 11

Chemical changes

Answer 11

Involves a change from one kind of matter into another kind of matter

Question 12

Atoms

Answer 12

The smallest particle of matter that contains three subatomic particle’s

Question 13

Proton

Answer 13

Positive charge located in the nucleus

Question 14

Electrons

Answer 14

Negative charged been found and fixed energy levels

Question 15

Neutrons

Answer 15

Neutral charge found in the nucleus

Question 16

Atom structure

Answer 16

Protons are positive and are located in the nucleus
neutrons and protons are located in the nucleus
electrons are negative and outside the nucleus
electrons are located on orbitals orbitals make up electron cloud

Question 17

Element

Answer 17

An element is a pure substance that consists entirely of one type of atom

Question 18

Periodic table

Answer 18

The periodic table is a chart displaying information about the earths basic elements

Question 19

Atomic symbol

Answer 19

Consist of one or two letters chosen to represent the element

Question 20

Atomic number

Answer 20

Indicates the total number of protons in the nucleus of an element

Question 21

Atomic weight

Answer 21

Also known as the average atomic mass of the element

equal to the number of protons plus the number of neutrons that an atom possesses

Question 22

Noble gas

Answer 22

Noble gases are found in calling 18 they do not react or combined with any other element they are extremely stable due to a complete outer orbital

Question 23

Metals

Answer 23

Elements to the left of the stairstep usually have one or two or three electrons in their outer shell

Question 24

Nonmetals

Answer 24

Elements to the right of the stairstep plus hydrogen generally only missing a few electrons from its outershell

Question 25

Metalloids

Answer 25

Elements along the stairstep a nonmetal element that shares properties between typical metals and nonmetals

Question 26

Isotopes

Answer 26

Isotopes are Adams of the same element that differ in the number of neutrons they contain they are identified by their mass number

Question 27

Radioactive isotopes

Answer 27

Radioactive isotopes have an unstable nuclei and breakdown at a constant rate overtime the radiation give enough to be dangerous radiation can also be helpful in treating cancer and killing bacteria

Question 28

Compounds

Answer 28

A compound is a substance formed by the chemical combination of two or more elements in definite proportions

Question 29

Ionic bonds

Answer 29

One or more electrons are transferred from one atoms to another to become noble

Question 30

Ions

Answer 30

Iambs are positively or negatively charged atoms

Question 31

Covalent bonds

Answer 31

Electrons are shared between atoms to become noble

Question 32

Mixtures

Answer 32

A mixture is a material composed of two or more elements or compounds that are physically mixed together but not chemically combined

Question 33

Homogeneous mixtures

Answer 33

Ions are gradually disbursed evenly | Contains a solid which is a substance that is dissolved.

Question 34

PH scale

Answer 34

A mathematical scale that is used to indicate how acidic or basic a solution is

Question 35

0-7

Answer 35

Solutions are acidic

Question 36

7-14

Answer 36

Solutions are basic

Question 37

7

Answer 37

Solutions are neutral

Question 38

Acids

Answer 38

Corrosive substance is characterized by strong smell sour taste in a pH of less than seven

Question 39

Bases

Answer 39

Corrosive substance is characterized by a bitter taste slippery feeling and a ph of greater than seven