Chemistry 1A Exam Review

Front 1

Atom

Back 1

The smallest particle of an element that retains the chemical properties of an element

Front 2

Compound

Back 2

A substance made of atoms of 2 or more different elements which are chemically bonded

Front 3

Which one is matter Air or Light

Back 3

Air

Front 4

What are the vertical columns on the periodic table called

Back 4

Groups

Front 5

What are the horizontal lines on a periodic table called

Back 5

Periods

Front 6

What is mass of a compound according to the law of conservation of mass

Back 6

Mass is all of the atoms in a compound

Hint 6

Calculating molar mass CO C= 12.0107 + O= 15.9994; CO= 28.0101g/mole

Front 7

What was Rutherford's gold experiment and how did he conclude about empty space in atoms

Back 7

Rutherford's gold experiment test at a piece of gold between a particle emitter and ZnS to determine the amount of space that atoms occupy. Atoms have a nucleus.

Front 8

What are positively charged particles in an atom

Back 8

Protons

Front 9

What are the particles with no electric charge known as

Back 9

Neutrons

Front 10

Which particles have almost the same Mass among protons neutrons and electrons

Back 10

Protons and neutrons

Hint 10

Electrons have virtually no Mass

Front 11

What does the nucleus of an atom contain

Back 11

Mass

Front 12

What makes an atom electrically neutral

Back 12

The equal number of protons and electrons make an atom electrically neutral

Front 13

Isotopes of the same element are atoms with different what

Back 13

Masses

Front 14

All atoms of oxygen contain how many protons

Back 14

8

Front 15

The atomic number of an atom is equal to its number of what

Back 15

Protons

Front 16

Nitrogen-14 has a mass of how many Amu

Back 16

14 Amu

Hint 16

Look at the mass following the element

Front 17

The neon isotope consists of 9 protons and 9 electrons and 10 neutrons its mass number is what

Back 17

Atomic mass number 19

Hint 17

Add the neutrons and the protons

Front 18

Sodium has an atomic number of 11 and a mass number of 23 it has how many protons how many electrons and how many neutrons

Back 18

11 protons 11 electrons and 12 neutrons

Hint 18

Atomic number is equal to protons and electrons and atomic mass is equal to protons and neutrons

Front 19

Carbon 13 with an atomic number of 6 has how many neutrons

Back 19

Has 7 neutrons

Hint 19

Protons plus neutrons equal the mass

Front 20

Helium-4 contains number of two neutrons, so how many protons does it contain

Back 20

Two proton

Hint 20

Protons plus neutrons equals mass

Front 21

Gamma rays visible light in microwaves have the same

Back 21

Speed

Hint 21

Speed of light

Front 22

Speed of light is equal to the product of what and what

Back 22

Wavelength and frequency

Hint 22

Equation of light and electromagnetic spectrum

Front 23

Electromagnetic radiations have what kind of behavior

Back 23

Wave-like Behavior

Front 24

Going from ground state to excited state electrons do what with energy

Back 24

Absorb energy

Front 25

An electron cloud is the region outside the nucleus where what are most probably found

Back 25

Electrons

Front 26

Add ground state electron have what possible energy

Back 26

Low possible energy

Front 27

3s level is found in a what energy level than 2s level

Back 27

A higher energy level than 2s level

Front 28

What is the maximum number of electrons in sublevels S P D and F

Back 28

S equals 2. p equals 6. d equals 10. and f equals 14

Front 29

What is the atomic number of beryllium with electron configuration of 1s2 2s 2

Back 29

4

Hint 29

Two plus two equals 4

Front 30

Write electron configuration for calcium and chlorine

Back 30

Configure atomic number

Front 31

Number of electrons in the highest energy level of xenon

Back 31

8

Hint 31

Look at the energy level then count all of the electrons in that level

Front 32

List all the noble gases

Back 32

Helium neon argon Krypton Xenon radon

Front 33

The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic what

Back 33

Atomic numbers

Front 34

The periodic law allows some properties of an element to be predicted based on its what

Back 34

Position on the periodic table

Front 35

Elements in a group / column have similar what

Back 35

Chemical properties

Front 36

The atomic number of boron the first element in he is fine he atomic number of the second element in this group is what

Back 36

13

Hint 36

Used periodic table

Front 37

Chlorine atomic number 17 belongs to group 17 how many electrons does chlorine have in its outermost energy level

Back 37

7

Front 38

In nature alkali metals occur as

Back 38

Compounds

Front 39

Most reactive group of nonmetals are

Back 39

Halogens

Front 40

Noble gases are what

Back 40

Highly unreactive

Front 41

Which group is more reactive alkali metals or alkaline earth metals

Back 41

Alkali metals

Front 42

What is the atomic radius

Back 42

The half of the distance between the nuclei bonded together

Front 43

Put these elements in increasing electronegativity O.N.I.F.C

Back 43

Electronegativity increases left to right

Hint 43

Electronegativity increases left to right

Front 44

Atomic radii what's as atomic number increases

Back 44

Increases

Front 45

London dispersion forces are blank than dipole-dipole forces

Back 45

Weaker than dipole dipole

Hint 45

London dispersion forces are the weakest

Front 46

London dispersion forces are stronger if electrons are blank in number and masses of molecules are blank

Back 46

London dispersion forces are stronger if electrons are increasing in number and masses of molecules are increasing

Front 47

What forces are attractions between positive and negative regions of molecules

Back 47

Dipole dipole forces are attractions between positive and negative regions of molecules

Front 48

Water has a higher boiling point because of what bonding between molecules

Back 48

Hydrogen bonding between molecules

Front 49

IBr has a higher boiling point than I2 because IBr is a ______ molecule and I2 is a ______ molecule

Back 49

Polar/ Non Polar

Front 50

Is gravitational force a type of intermolecular forces

Back 50

No

Hint 50

Hydrogen bonding dipole dipole London dispersion and ionic bonding intermolecular forces

Front 51

Can particles in gases in liquids change position with other particles

Back 51

Yes

Hint 51

Particles move more freely in gases and liquids

Front 52

Put these in increasing order of strength in terms of intermolecular forces

Back 52

Gas liquid solid

Front 53

In what state are particles closer liquid or gas

Back 53

Liquid

Hint 53

Pop in the freezer

Front 54

What is evaporation and sublimation

Back 54

Evaporation is liquid to gas and sublimation is solid to gas

Front 55

When a liquid changes into a solid energy particles do what

Back 55

Decrease

Front 56

In which state do particles hold each other strongly

Back 56

Solid

Hint 56

Freezing water to ice

Front 57

Solids have definite shape and volume because particles do what with their positions

Back 57

They cannot change their positions

Front 58

Solids have what shape or volume

Back 58

Solids have definite shape and volume

Front 59

Liquids have what shape or volume

Back 59

Liquids have no definite shape but definite volume

Front 60

Gases have what shape or volume

Back 60

Gases have no definite shape and no definite volume

Front 61

What do the two and four in helium 4 with a atomic number 2 represent

Back 61

2 and 4 represent atomic number and atomic mass

Front 62

What do the 101 and 256 in Mendel veium 256 with an atomic number of 101 represent

Back 62

Atomic number and atomic mass

Front 63

What does the 238 in uranium 238 represent

Back 63

Atomic mass

Front 64

In a nuclear reaction unstable nuclei change the number of protons and neutrons to become what and produce large amounts of what

Back 64

To become stable and to produce large amounts of energy

Front 65

Balance the following equation beryllium plus helium equals carbon plus what

Back 65

Neutron

Hint 65

First find what it equals then match it with its symbol

Front 66

Balance the following equation neptunium equals plutonium plus what

Back 66

Electron capture

Hint 66

Find what equals then find the symbol to match

Front 67

During radioactive decay the nucleus disintegrates into a what and what nucleus

Back 67

Into a lighter and stable nucleus

Front 68

Write the symbol for alpha particle

Back 68

Helium 4 atomic number 2

Front 69

What is the symbol for beta particle

Back 69

Beta 0 atomic number -1

Front 70

Gamma rays are what kind of radiation

Back 70

Electromagnetic radiation

Front 71

What is the half life of an isotope if 125 grams of a 500 gram sample of the isotope remain after 3 years

Back 71

1.5 half life

Hint 71

Front 72

What is the half life of an isotope of 50 grams of a 100 gram sample of the isotope remain after 5 years

Back 72

Five half-life

Hint 72

Refer to number 72

Front 73

Example of balancing an equation

Back 73