Science Test 10-8-15

Front 1

All_____ except mercury are solids at room tempereature.

Back 1

Metals

Front 2

In general, nonmetals are______.

Back 2

Good conducters of heat

Front 3

Most of the mass of an atom is found in its_____.

Back 3

Nucleus

Front 4

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is_____.

Back 4

56

Front 5

Each row in the periodic table ends with a_____.

Back 5

Noble Gas

Front 6

In going from left to right in any given row in the periodic table, the size of atoms generally________.

Back 6

Increases

Front 7

Which category of elements have the property of being malleable and ductile?

Back 7

Metals

Front 8

Which metalloid is in the fourth period and the smae group as carbon?

Back 8

Germanium

Front 9

Which of the group 13 elements is not metal?

Back 9

Boron

Front 10

Each inner energy level of an atom has a maximum number of_____it can hold.

Back 10

Electrons

Front 11

Dot diagrams are used to represent_____.

Back 11

Outer level electron

Front 12

Particles of matter that make up protons and neutrons are_____.

Back 12

Quarks

Front 13

A chemical symbol represents the_____ of and element.

Back 13

Name

Front 14

Horizontal rows of the periodic table are called...

Back 14

Periods

Front 15

Atoms of the same element with different numbers of neutrons is called

Back 15

Isotopes

Front 16

A particle that moves around the nucleus is an..

Back 16

Electron

Front 17

Elements that are gases, are brittle, and are poor conductors at room temperature are....

Back 17

Nonmetals

Front 18

A____is used to accelerate protons in the study of subatomic particles.

Back 18

Tevatron

Front 19

Elements on the far right of the periodic table are classified as nonmetals.

Back 19

False; noble gases

Front 20

Thompson's experiments led to the discovery of the neutron.

Back 20

True

Front 21

The closer an electron is to the nucleus, the lower its energy.

Back 21

True

Front 22

Every atom of the same element has the same atomic number.

Back 22

True

Front 23

For an atom to be neutral, the number of protons must equal the number of neutrons.

Back 23

True

Front 24

Matter always has mass.

Back 24

True

Front 25

The central core of an atomis called the hub.

Back 25

False; atomic nucleus

Front 26

The chart showing the classifications of elements according to their properties and increasing atomic numbers is called the periodic table.

Back 26

True

Front 27

The mass of an electron is about equal to the mass of a proton.

Back 27

False; neutron

Front 28

Elements arranged in vertical columns in the periodic table are called periods.

Back 28

False; groups

Front 29

The region around the nucleus occupied by the eletrons is called the negative zone.

Back 29

False: eletron cloud

Front 30

The symbol for chlorine is C.

Back 30

False; CI

Front 31

The maximum number of electrons in the second energy level of an atom is 4.

Back 31

False; 8

Front 32

Two isotopes of carbon-12 and carbon-14. These isotopes differ from one another by two protons.

Back 32

False; neutrons

Front 33

Metals are good conductors of hear and electricity.

Back 33

True

Front 34

Scientists believe that naturally occuring elements are manufactured within Mars.

Back 34

False; stars/super nova

Front 35

So far, scientists have confirmed the existance of six different quarks.

Back 35

True

Front 36

In 1926, scientists developed the Bohr model of the atom that is used today.

Back 36

False; electron cloud

Front 37

The sum of the number of protons and neutrons in an atom is the mass number.

Back 37

Ttrue

Front 38

The symbol for fluorine is Fe.

Back 38

False; F

Front 39

The very stable electron arrangement in the outer energy level is characteristic of noble gases.

Back 39

True

Front 40

One proton and one electron are added to each element as you go across the periodic table.

Back 40

True

Front 41

Electron cloud models are used to show how electros in the outer energy level are bonded when elements combine to form compounds.

Back 41

False; dot diagram

Front 42

The atomic number of an element is determined by its number of protons.

Back 42

True

Front 43

According to the present atomic theory, the location of an electron is an atom cannot be pinpointed exactly.

Back 43

True

Front 44

Moving from left to right in the row of the periodic table, metallic properties increase.

Back 44

False; decrease