Chemistry

Question 1

Matter

Answer 1

Anything that has mass and occupies space

Question 2

What are the 4 states of matter?

Answer 2

Liquids, Solids, Gas, and Plasma

Question 3

What is a homogeneous mixture?

Answer 3

The mixing of two pure substances; uniform

Question 4

What is a heterogeneous mixture?

Answer 4

When the composition of the mixture is not uniform

Question 5

An element is composed of…

Answer 5

Atoms of the same type

Question 6

A compound is…

Answer 6

A pure substance made of 2+ types of atoms

Question 7

What is a molecule formed by?

Answer 7

Connecting two or more nonmetal atoms

Question 8

Vertical columns on the Periodic Table are called…

Answer 8

Groups

Question 9

Group 1 are…

Answer 9

Alkali metals

Question 10

Group 2 are…

Answer 10

Alkaline earth metals

Question 11

Group 15 are…

Answer 11

Pnictogens

Question 12

Group 16 are…

Answer 12

Chalcogens

Question 13

Group 17 are…

Answer 13

Halogens

Question 14

Group 18 are…

Answer 14

Noble gases

Question 15

Non-miscible:

Answer 15

Heterogeneous mixture of 2+ liquids (Water and oil)

Question 16

Rows in the Periodic Table are called:

Answer 16

Periods

Question 17

Metal+nonmetal=

Answer 17

Ionic Compound

Question 18

Nonmetal+nonmetal=

Answer 18

Covalent/molecular compound

Question 19

3000 in scientific notation is…

Answer 19

3 x 10^3

Question 20

Atomic number tells us…

Answer 20

How many protons an element contains

Question 21

Physical Changes

Answer 21

Changing color, Melting point, Boiling Point, Density

Question 22

Chemical Changes

Answer 22

Transforms into another substance, Flammability, Corrosiveness

Question 23

What determines the composition of a substance?

Answer 23

Atoms and Particles

Question 24

What elements are gases?

Answer 24

N2, O2, Ar and 8 more

Question 25

What two elements are liquid?

Answer 25

Br2 and Hg

Question 26

Minerals are...

Answer 26

Chemical Compounds found in rocks and soil

Question 27

Definition of a Mixture

Answer 27

Combination of pure substances including atoms, elements, and compounds

Question 28

What are the five regions of Earth's atmosphere?

Answer 28

Exosphere, Thermosphere, Mesosphere, Stratosphere, and Troposphere

Question 29

Equal volumes of gases contain equal numbers of atoms or molecules, as long as the samples are at the same and

Answer 29

temperature and pressure

Question 30

When naming a compound composed of two nonmetals, the number of atoms of each element is indicated by a Greek numerical...

Answer 30

prefix

Question 31

What is combustion

Answer 31

Process in which a substance burns in oxygen

Question 32

Risk Assessment is...

Answer 32

Evaluating scientific data and making predictions about an outcome

Question 33

Different forms of the same element (such as O2 and O3) are called...

Answer 33

Allotropes

Question 34

Hydrocarbons are commonly used as...

Answer 34

Fuel

Question 35

Organic compounds always contains the element...

Answer 35

carbon

Question 36

The set of principles used to design environmentally friendly chemical products and/or processes is called chemistry.

Answer 36

green

Question 37

What is a covalent bond?

Answer 37

Electrons shared between two atoms

Question 38

What is an ionic bond?

Answer 38

Transfer of electrons to make ionic compound stable

Question 39

What are Lewis Structures?

Answer 39

Representation of molecules demonstrating share of electrons

Question 40

With an increase in bond length, bond energy:

Answer 40

decreases

Question 41

How is bond order calculated for one atom?

Answer 41

Amount of bonds

Question 42

How is bond order calculated for two or more atoms?

Answer 42

Total number of bonds divided by number of bond groups

Question 43

Higher bond order means...

Answer 43

Greater stability

Question 44

What atmosphere is ozone most commonly found?

Answer 44

Stratosphere

Question 45

Highest to lowest energy of UV radiation

Answer 45

UV-C, UV-B, UV-A

Question 46

Which UV Radiation reaches Earth's surface?

Answer 46

UV-A

Question 47

What units are used to measure the concentration of ozone in the atmosphere?

Answer 47

Dobson Units

Question 48

Number of wavelengths in a period of time is

Answer 48

Frequency

Question 49

Wavelength and frequency are proportional

Answer 49

inversely

Question 50

Energy and wavelength are proportional

Answer 50

inversely

Question 51

Ozone is more/less reactive than oxygen

Answer 51

More

Question 52

Extensive Properties vs Intensive Properties

Answer 52

Extensive properties depend upon the amount of matter in a sample, intensive properties do not

Question 53

What is malleability?

Answer 53

Physical property of metal of being capable of being extended or shaped by a hammer

Question 54

What is corrosion?

Answer 54

Natural process that converts a metal to an oxide. (Rust)

Question 55

What is ductility?

Answer 55

Physical property of a material being able to stretch without being broken

Question 56

Density and volume are proportional

Answer 56

Inversely

Question 57

How is the central atom of a Lewis Structure determined?

Answer 57

Lowest subscript If all the same, the atom with the lowest electronegativity is the central atom

Question 58

How is electronegativity determined?

Answer 58

Up and right is higher electronegativity Down and left is lower electronegativity Group 18 does NOT count

Question 59

What element has the highest electronegativity?

Answer 59

Fluorine

Question 60

What element has the lowest electronegativity?

Answer 60

Francium

Question 61

A molecule that always contains carbon and may contain hydrogen, oxygen, and nitrogen is called a(n)

Answer 61

Organic compound

Question 62

In a balanced equation, do the number of atoms or number of molecules need to be the same?

Answer 62

Atoms

Question 63

Equal volumes of molecular gases (such as N2 or O2) at a given temperature and pressure will always

Answer 63

Contain an equal number of molecules

Question 64

Ozone can effect

Answer 64

lungs and crops

Question 65

Which color of visible light will have the lowest energy photons?

Answer 65

Red

Question 66

In general ozone (O3) is much _____ reactive than oxygen (O2).

Answer 66

more

Question 67

Polyatomic ions are found in bonds

Answer 67

Ionic

Question 68

An agent is needed for combustion, alongside a fuel and ignition source.

Answer 68

Oxidizing