Chemistry Basics!

Question 1

Define an atom

Answer 1

An atom. Is the smallest unit of an element.

Question 2

What is an atom composed of

Answer 2

Electrons, protons, neutrons.

Question 3

True or false?

Each atom of the same element has the same combination of protons and electrons?.

Answer 3

True

Question 4

What type of charge does a proton have?

Answer 4

Positive.

Question 5

What type of charge does a electron have?

Answer 5

Negative.

Question 6

Define the periodic table

Answer 6

The periodic table, is a very useful table describing the atoms of every known element.

Question 7

What does the symbol “C” stand for on the periodic table

Answer 7

Carbon

Question 8

What does “HE” stand for on the periodic table?.

Answer 8

Helium..

Question 9

What is the number of protons called in a certain atom?.

Answer 9

Atomic number

Question 10

“FE” stands for?

Answer 10

Iron..

Question 11

How many electrons does the element “ZN” have?

Answer 11

Zinc has 30 electrons.

Question 12

How many electrons does it take to equal one proton?

Answer 12

1,836, it takes about 1,836 electrons to equal the weight of just one proton..

Question 13

How many protons does the atom “HE” have?

Answer 13

Helium has 2 protons. And 2 electrons.

Question 14

What is the charge of a neutron?

Answer 14

The neutron has no charge. ( Neutral)

Question 15

Which subatomic particle weighs the least?

Answer 15

Electrons

Question 16

Which subatomic particle weighs the most?

Answer 16

Neutrons

Question 17

Which subatomic particle is in between the two weights

Answer 17

Protons.

Question 18

Which particles make up the nucleus of an atom?

Answer 18

Protons and neutrons.

Question 19

True or false can neutrons be found in the element Hydrogen?

Answer 19

False

Question 20

What are the rows called in a periodic table?

Answer 20

Periods.

Question 21

What are the columns called in a periodic table?

Answer 21

Groups.

Question 22

What is the element “ AR”

Answer 22

Argon

Question 23

What are Noble Gases?

Answer 23

Helium, neon, argon, krypton.

Question 24

Describe and state the alkaline metals?

Answer 24

Lithium, sodium, potassium, rubidium.
The alkaline metals are any of the six chemical elements that make up group 1a on the periodic table.

Question 25

What is Group 2A on the periodic table?

Answer 25

Alkaline earth metals,

Question 26

What is the element “K”

Answer 26

Potassium

Question 27

what is the element group VIIA called?

Answer 27

Halogens

Question 28

What does halogens stand for?

Answer 28

Salt formers

Question 29

What two elements make up table salt?

Answer 29

“NA”= sodium “ Cl”= chlorine

Question 30

What family does the element Iodine belong to?

Answer 30

halogen.

Question 31

What three classes of elements can the periodic table be divided into?

Answer 31

Metals, nonmetals and metalloids.

Question 32

What is the element “CU”?

Answer 32

Copper

Question 33

Define malleable

Answer 33

Anything that can be beaten into fine sheets

Question 34

Define ductile

Answer 34

The ability to be drawn into wires.

Question 35

Which families do the nonmetals belong to?

Answer 35

Halogens and Noble gases.

Question 36

True or false? Nonmetals are very brittle, and do not conduct heat or electricity

Answer 36

True.

Question 37

True or false silicon is a metaloid

Answer 37

True

Question 38

How many protons are in the element phosphorus?

Answer 38

15 protons

Question 39

True or false Almost all of the mass of an atom more than 99.99 percent is attributed to the Nucleus

Answer 39

True.

Question 40

Which two particles is the nucleus made up of?

Answer 40

Protons, and neutrons.

Question 41

Define mass

Answer 41

Mass, is a measure of the amount of matter, The mass of an object determines its weight.

Question 42

Define weight

Answer 42

Weight, is the effect of gravity on mass

Question 43

What is the mass number

Answer 43

the mass number is the number of protons added to the number of neutrons in an atom.

Question 44

How many protons does the element Phosphorus have?

Answer 44

15 protons

Question 45

True or false The number of electrons in an atom typically equals the number of protons?.

Answer 45

True

Question 46

What is an element.

Answer 46

An element is matter that is composed of a single type of atom

Question 47

What is the mass of an electron?

Answer 47

0.00054

Question 48

How many naturally occurring elements are there?

Answer 48

93.

Question 49

Atoms that have a different amount of neutrons in their nuclei are called?

Answer 49

Isotopes.

Question 50

Atoms that undergo radioactive decay are called what?

Answer 50

Radioactive isotopes.

Question 51

How fast do electrons orbit the nucleus?

Answer 51

100 quadrillion times per second.

Question 52

Electrons in the outermost shell of atoms are called what?

Answer 52

Valence electrons.

Question 53

When are outer electron shells stable?

Answer 53

When they contain eight electrons.

Question 54

When two or more atoms are held together by chemical bonds what do they form?

Answer 54

A molecule

Question 55

A molecule that contains atoms of more than one element is called?

Answer 55

A compound

Question 56

What is a covalent bond?

Answer 56

A covalent bond is the sharing of a pair of electrons by two atoms.

Question 57

Define electronegativity

Answer 57

Electronegativity is defined as the attraction of an atom for its electrons.

Question 58

What is a nonpolar covalent bond?

Answer 58

When the shared electrons spend an equal amount of time around each nucleus. When this happens NO opposite ends exists! ( NO POLES)

Question 59

H-H, in this question what does the dash represent?

Answer 59

The dash represents the chemical bond between the atoms.

Question 60

How many electrons are in the valance shell of carbon?

Answer 60

4

Question 61

Compounds that contain carbon and hydrogen atoms are called?

Answer 61

Organic compounds.