Periodic

Question 1

Arrangement of atoms in various energy levels

Answer 1

Electron configuration

Question 2

Tool used to show the arrangement of elements in an organized manner

Answer 2

Periodic table of elements

Question 3

Elements are arranged in increasing atomic weight.
Has similar physical and chemical properties which occurs after each interval of 7 elements.
Who is the proponent?

Answer 3

Law of Octaves by John Newlands

Question 4

Elements are arranged in increasing atomic mass, in groups if 3 (triads) having similar chemical properties.
Who is the proponent?

Answer 4

Law of Triads by Dobereiner

Question 5

Created his own version of the periodic table listing the most known elements at the time by their increasing atomic mass and who is the proponent.

Answer 5

Modern periodic table by Dmitri Mendeleev

Question 6

His arrangement left gaps, which led to the discovery of elements yet to be discovered.

Answer 6

Modern periodic table by Dmitri Mendeleev

Question 7

Introduced the concept of atomic numbers in the periodic table.

Answer 7

Modern periodic table by Henry Moseley

Question 8

Elements are arranged in increasing atomic number.
Atomic mass is a weighted average of all naturally occurring isotopes.

Answer 8

The periodic table

Question 9

2 useful ways to classify elements

Answer 9

The metals, nonmetals, and metalloids and periods and families.

Question 10

Located on the left side of the periodic table

Answer 10

Metals

Question 11

Are brittle, aren’t malleable and ductile, and poor conductors of heat and electricity.

Answer 11

Nonmetals

Question 12

Tend to gain electrons in a chemical reaction

Answer 12

Nonmetals

Question 13

They are economically important as they have unique conductivity properties which makes them valuable in the semiconductor and computer chip industry

Answer 13

Metalloids or semi-metals

Question 14

Are the horizontal rows in the periodic table and are numbered 1-7 in the left side of the periodic table.

They do not have very similar properties

Answer 14

Periods

Question 15

Are the vertical columns in the periodic table. Older methods used are roman numerals and letters.

They have similar properties

Answer 15

Families or groups

Question 16

Highly reactive with water

Answer 16

1A Alkali metals

Question 17

Reactive with water, and increases as you move down the group

Answer 17

2A alkali earth metals

Question 18

Not as well-known as other elements.
Most known element is Aluminum

Answer 18

3A Earth metals/Boron Group

Question 19

Refers to their ability to carry charge of 4

Answer 19

4A Tetrels/Carbon Group

Question 20

Intermediate between those of metals and nonmetals

Answer 20

5A Pnictogens/ Nitrogen Group

Question 21

changing from nonmetallic to metallic as you move down the family

Answer 21

6A Chalcogens/ Oxygen Group

Question 22

Creates/ Forms salts; high electron affinities

Answer 22

7A Halogens

Question 23

Highly stable, unreactive

Answer 23

8A noble gases

Question 24

D and F block metals with 2 valence electrons

Answer 24

3B-12B Transition metals

Question 25

Specific pattern present in the periodic table which illustrate the different aspects of certain elements including its size and electronic properties

Answer 25

Periodic Trends

Question 26

1. Moves left to right across the period 2. Moves top to bottom down a group

Answer 26

1. Electronegativity- increases (period) 2. Electronegativity- Decreases (groups)

Question 27

1. Moves left to right across the period 2. Moves top to bottom down a group

Answer 27

1. Ionization Energy- increases (period) 2. Ionization Energy- Decreases (groups)

Question 28

1. Moves left to right across the period 2. Moves top to bottom down a group

Answer 28

1. Electron Affinity- increases (period) 2. Electron Affinity- Decreases (groups)

Question 29

1. Moves left to right across the period 2. Moves top to bottom down a group

Answer 29

1. Atomic Radius- decreases (period) 2. Atomic Radius- increases (groups)

Question 30

1. Moves left across the period and down the group 2. Moves right across the period and up the group

Answer 30

1. Metallic Property- increase metallic character 2. Metallic Property- decrease metallic character

Question 31

Atoms form compounds to achieve a filled valence energy level. Atoms in some compound share electrons.

Answer 31

Covalent bonds

Question 32

Why do atoms have to share?

Answer 32

Chemical bond that comes from the sharing of 1 or more electronic pair between 2 atoms

Question 33

3 ways to represent covalent bonds

Answer 33

A. Overlapping of electron orbitals, and the sharing of electron pair B. Electron-dot formula C. Lewis structural formula

Question 34

Uses complex shape of orbitals

Answer 34

Quantum mechanical model of atom

Question 35

Scientists introduced 4 numbers to describe the characteristics of electrons and their orbitals

Answer 35

Quantum Numbers

Question 36

What are the 4 quantum numbers

Answer 36

Principal (n), Angular Momentum (l), Magnetic (ml), Spin (ms)

Question 37

Defined as atom or groups of atoms within a molecule that has similar chemical properties whenever it appears in various compounds

Answer 37

Functional Group

Question 38

Contains 1 or more double bonds between neighboring carbon atoms

Answer 38

Alkenes

Question 39

Contains 1 or more triple bonds between neighboring carbon atoms

Answer 39

Alkynes

Question 40

Functional group that contains a ring Contains alternating double bonds

Answer 40

Aromatics or Aromatic Ring

Question 41

Large molecules necessary for life and built from smaller organic molecules

Answer 41

Biological Molecules

Question 42

4 major classes of biological macromolecules

Answer 42

Carbohydrates, lipids, protein, nucleic acid

Question 43

Presented by the formula (Ch2O)n, where n is the number of carbon atoms

Answer 43

Carbohydrates

Question 44

Are simple sugars, most common example is glucose

Answer 44

Monosaccharides Mono- 1 sacchar- sweet

Question 45

Form when 2 monosacharrides undergo dehydration reaction

Answer 45

Disaccharides Di- 2

Question 46

Includes fats, oils, waxes, phospholipids, and steroids

Answer 46

Lipids

Question 47

The building blocks of many hormones and is an important constituent of the plasma membrane

Answer 47

Lipids

Question 48

Are hydrophobic (water-fearing), insoluble in water and are nonpolar molecules.

Answer 48

Lipids

Question 49

Are one of the most abundant organic molecules in living systems and have the most diverse range of functions in all macromolecules

Answer 49

Protein

Question 50

Are the key macromolecules in the continuity of life. Carries the genetic blueprint and the instructions for the functioning of the cell.

Answer 50

Nucleic Acid

Question 51

What are the 2 main types of nucleic acid

Answer 51

DNA- deoxyribonucleic acid RNA- ribonucleic acid

Question 52

The genetic material found in all living organisms. Ranging from single-celled bacteria to multicellular mammals

Answer 52

DNA

Question 53

Mostly involved in the protein synthesis. Used by DNA to communicate with the rest of the cell.

Answer 53

RNA.

Question 54

two atoms of the same element share electrons, they are shared equally

Answer 54

Nonpolar covalent bond

Question 55

atoms of different elements share electrons, the shared electrons tend to be pulled closer to one element than the other (because of electronegativity)

Answer 55

polar covalent bond

Question 56

"Electrons shared evenly in the bond -E-neg difference is zero or less than zero

Answer 56

Nonpolar bond

Question 57

Electrons unevenly shared E-neg difference greater than zero but less than 2.0

Answer 57

Polar bond

Question 58

Molecules is nonpolar because it’s symmetrical

Answer 58

Nonpolar molecules

Question 59

-Not equal on all sides •Polar bond between 2 atoms makes a polar molecule -asymmetrical shape of molecule

Answer 59

Polar molecules/ dipoles

Question 60

Nonpolars are silimar Polars are different

Answer 60

Bonds

Question 61

Nonpolar is symmetrical Polar is asymmetrical

Answer 61

Molecules

Question 62

the electrons are not shared but transferred between atoms forming ions.

Answer 62

Ionic bond

Question 63

soluble in nonpolar liquids but not in water

Answer 63

Covalent compounds

Question 64

- soluble in water but not in nonpolar liquid

Answer 64

Ionic compounds

Question 65

Happens when there is transferring or sharing of electrons

Answer 65

Chemical bonding

Question 66

Occurs between like atoms of a metal in the free state

Answer 66

Metallic bonding

Question 67

enable me-tals to conduct electricity

Answer 67

Mobile electrons

Question 68

-are called Salts or Crystals -Always formed between metals and non-metals

Answer 68

Ionic bonding

Question 69

Pairs of e- are shared between non-metal atoms

Answer 69

Covalent bonding