Chemistry Exam S1

Front 1

What quantum number determines the orbital in a subshell that might be occupied by an electron?

Back 1

ml

Front 2

What part of the atom defines an atom?

Back 2

electrons

Front 3

A piece of indium with a mass of 16.6g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 48.6 cm3. What is the density of indium?

Back 3

7.2 g/cm3

Front 4

These types of elements are either brittle solids or gases

Back 4

nonmetals

Front 5

Which property generally decreases across the period table?

Back 5

Atomic Radius

Front 6

density formula

Back 6

mass/volume (g/mL)

Front 7

How many orbitals make up the 4P subshell?

Back 7

3

Front 8

2 samples have the same # of protons but different # of neutrons. What are they to each other?

Back 8

isotopes

Front 9

The state of matter for an object that has a definite volume but not a definite shape is....?

Back 9

liquid state

Front 10

Elements that have a full energy level are considered?

Back 10

noble gases

Front 11

Under normal conditions, halogens are what in their elemental form?

Back 11

diatomic

Front 12

mass

Back 12

volume x density

Front 13

What quantum numbers are the properties of an atomic orbital?

Back 13

size, shape, orientation

Front 14

Rutherford's gold-foil experiment demonstrated that...?

Back 14

most of the atom is empty space

Front 15

Which property is "decomposes into uranium and fluorine gas"?

Back 15

chemical

Front 16

Elements that have their outer electrons in the same energy level are in the same?

Back 16

period

Front 17

How many horizontal rows of elements in the periodic table and what are they called?

Back 17

seven, periods

Front 18

volume

Back 18

mass/density

(mass/1)x(1mL/mass)

#g = 1 mL

Front 19

What does the 3 in the 3d6 represent?

Back 19

energy level

Front 20

In Rutherford's experiments, the alpha particles bounced back at the experimenters gave evidence of an atom's.....?

Back 20

nucleus

Front 21

The boiling point of water is a ... change because....?

Back 21

physical change; the gaseous water is chemically the same as the liquid

Front 22

Elements have are shiny, ductile and conduct electricity are

Back 22

metals

Front 23

all elements in the same group have the same number of what?

Back 23

valence electrons

Front 24

Does the sublevel 2d exist?

Back 24

no

Front 25

The plum pudding model of the atom created by Thomson states that....?

Back 25

atoms are made up of positively charged particles with negatively charged particles embedded in the positively charged particles

Front 26

food coloring added to mashed potatoes is an example of a ....

Back 26

physical change

Front 27

Elements that conduct electricity at high temperatures

Back 27

Metalloids

Front 28

The amount of energy needed to remove an electron from an isolated gaseous atom is known as the what?

Back 28

ionization energy

Front 29

In whose model do electrons reside in energy levels?

Back 29

Bohr's

Front 30

Who was credited with the discovery of the electron as a result of work with cathode rays?

Back 30

Thomson

Front 31

substances with constant composition that can be broken down into elements by chemical process

Back 31

compounds

Front 32

Elements that have the same ending electron configuration and have similar properties are in the same?

Back 32

family/group

Front 33

Electronegativity is an atom's ability to what?

Back 33

attract electrons to itself

Front 34

Which principle states that two electrons that reside in the same orbital must have the opposite spin?

Back 34

Pauli's exclusion

Front 35

What is true about subatomic particles?

Back 35

The mass of a neutron nearly equals the mass of a proton

Front 36

filtration is the most effective way to physically separate

Back 36

mixture of liquid and non-dissolving solid

Front 37

In what section of the periodic table is the 4f subshell being filled?

Back 37

lanthanides

Front 38

Only two electrons are allowed in an orbital is part of which rule?

Back 38

Pauli's exlusion

Front 39

The average atomic mass of an element depends upon...?

Back 39

mass and relative abundance of each isotope of that element

Front 40

a solution, like salt water, is also called a

Back 40

homogeneous mixture

Front 41

Who was recognized for developing the modern periodic table because of his prediction of undiscovered elemental properties?

Back 41

Mendeleev

Front 42

Hund's rule states what?

Back 42

electrons must spread out with one electron in every orbital before pairing up

Front 43

As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?

Back 43

Electrons are distributed around the nucleus and occupy almost all the volume of the atom

Front 44

the classic definition of matter includes

Back 44

mass and volume

Front 45

This person developed the Law of Chemical Periodicity

Back 45

Moseley

Front 46

Electrons must fill lower energy levels first is part of whose rule?

Back 46

Aufbau's

Front 47

air is a ....

Back 47

homogeneous mixture

Front 48

What does the Law of Chemical Periodicity state?

Back 48

Properties of elements are a function of their atomic number

Front 49

Deboglie states that electrons act as both a what and a what?

Back 49

particle and wave

Front 50

table salt is a ....

Back 50

pure compound

Front 51

Who was one of the first people to organize elements based on their properties? He tried to group elements together in triads.

Back 51

Dobereiner

Front 52

lead piping is a....

Back 52

pure element

Front 53

Who developed the first trans-uranic elements? He discovered the lanthanide and actrinide series of the periodic table

Back 53

Seaborg

Front 54

nitrogen gas is a .....

Back 54

pure element

Front 55

oreo cookies are a ....

Back 55

heterogeneous mixture

Front 56

sugar water is a ....

Back 56

homogeneous mixture

Front 57

an oatmeal raisin cookie is a ...

Back 57

heterogeneous mixture

Front 58

copper wiring is a ...

Back 58

pure element

Front 59

carbon dioxide is a....

Back 59

pure compound

Front 60

oxygen gas is a....

Back 60

pure element

Front 61

sugar is a....

Back 61

homogeneous mixture

Front 62

flammability (property?)

Back 62

chemical property

Front 63

chlorine is a green gas (property?)

Back 63

physical property

Front 64

boiling point of water is 100.0 C (property?)

Back 64

physical property

Front 65

acids produce hydrogen gas when in contact with metals (property?)

Back 65

chemical property

Front 66

oils are not soluble in water (property?)

Back 66

physical property

Front 67

metals rust in the presence of water (property?)

Back 67

chemical property

Front 68

Which technique needs to be used to separate water from a precipitate that was created from 2 soluble substances?

Back 68

filtration

Front 69

Which technique needs to be used to separate salt from water?

Back 69

evaporation

Front 70

monoatomic ion

Back 70

ion with 1 atom

Front 71

polyatomic ion

Back 71

ion with more than 1 atom

Front 72

cation

Back 72

ion with a positive charge

Front 73

anion

Back 73

ion with a negative charge