Sciencet Test On Chemistry

Front 1

Where does the abbreviation for the element silver come from?

Back 1

its derived form the latin word argentum which means silver

Front 2

waht r the 3 particles that make up and atom and where r tehy located?

Back 2

protons and neutrons-nucleus
electrons-nucleus cloud around the nucleus

Front 3

waht are quarks?

Back 3

particles of matter that make up protons and neutrons

Front 4

whats the chemical symbol for copper?

Back 4

cu

Front 5

whats the chemical symbol for zinc?

Back 5

zn

Front 6

whats the chemical symbol for gold?

Back 6

Au

Front 7

whats the chemical symbol for lead?

Back 7

pb

Front 8

whats the chemical symbol for silver?

Back 8

Ag

Front 9

whats the chemical symbol for iodine?

Back 9

I

Front 10

whats the chemical symbol for mercury?

Back 10

Hg

Front 11

whats the chemical symbol for tin?

Back 11

Sn

Front 12

whats the chemical symbol for calcium?

Back 12

Ca

Front 13

whats the chemical symbol for chlorine?

Back 13

Cl

Front 14

whats the chemical symbol for Iron?

Back 14

Fe

Front 15

which 2 parts of an atom have masses that r almost equal 2 eachother?

Back 15

protons and electrons

Front 16

where is the majority of the mass of an atom located?

Back 16

nucleus

Front 17

Atomic Number is waht?

Back 17

# of protons in an element

Front 18

Mass =

Back 18

atomic number + # of neutrons

Front 19

how r isotopes of an elements similar and different?

Back 19

similar-# of protons
different-# of neutrons

Front 20

why is the atomic mass an average mass?

Back 20

there r isotopes and they average all the atomic masses into 1 average mass

Front 21

What is group 18 called?

Back 21

Noble or Inert Gasses

Front 22

what is a characteristic of group 18?

Back 22

non-reactive

Front 23

what is group 17 called?

Back 23

halogens

Front 24

what r some characteristics of group 17?

Back 24

form salt
disinfectants and cleaners

Front 25

what is group 1 called?

Back 25

Alkali Metals

Front 26

what is a characteristic of group 1?

Back 26

highly reactive

Front 27

waht r vertical columns of the periodic table called?

Back 27

groups or families

Front 28

what r horizontal columns of the periodiv table caled?

Back 28

periods

Front 29

what is common 2 all elements in the same group?

Back 29

they have common properties and the same electron dot diagram

Front 30

in a neutral atom what is the number of electrons equal to?

Back 30

the number of protons

Front 31

which energy level has electrons with more energy?

Back 31

the outter most level

Front 32

how many electrons can energy level 1 hold?

Back 32

2

Front 33

how many electrions can energy level 2 hold?

Back 33

8

Front 34

what do dots represent in electron dot diagrams?

Back 34

the electrons in the outter most energy level

Front 35

elemments colored blue r what?

Back 35

metals

Front 36

what r some characteristics of metal?

Back 36

shiny
good conductors of heat and electricity
most r solids at room temperature
can be pounded into hseets
can be drawn into wires

Front 37

elemenets colored yellow r what?

Back 37

nonmetals

Front 38

what r some characteristics of nonmetals?

Back 38

bad conductors of heat and electricty at room temperature
most r gasses
brittle

Front 39

elements colored green r what?

Back 39

metalloids

Front 40

why r elements colored green called metalloids?

Back 40

hey have characterisitcs of both metals and nonmetals

Front 41

what is the name of the organized table of elements that was designed by mendelev?

Back 41

periodic table

Front 42

waht r 2 elements with the same number of protons but different number of neutrons called?

Back 42

isotopes

Front 43

waht is the weighted-average mass of all known isotopes for an element called?

Back 43

average atomic mass

Front 44

what is the name of the positively charged center of an atom?

Back 44

nucleus

Front 45

what r the particles that make up protons and neutrons called?

Back 45

quarks

Front 46

what is the name of a horizontal row in the periodic table called?

Back 46

period

Front 47

what is the sum of # of protons and # of neutrons called?

Back 47

mass number

Front 48

in the current model of the atom where r ther electrons located?

Back 48

oustide the nucleus in an electron cloud

Front 49

in which state of matter r most of the elemeents 2 the left of the stair-step line in the periodic table?

Back 49

solid

Front 50

what is the term for a pattern that repeats?

Back 50

periodic

Front 51

what is an element that would haveve similar properties 2 neon?

Back 51

argon

Front 52

what term describes boron?

Back 52

metalloid

Front 53

how many outer level electrons does lithium have?

Back 53

1

Front 54

what isnt found in the nucleus?

Back 54

electrons

Front 55

halogens r in what group?

Back 55

17

Front 56

nitrogen is waht state of matter at room temperature?

Back 56

gas

Front 57

what element is shiny and a good conductor of heat and electricity?

Back 57

magnesium

Front 58

the atomic number of Re is 75. the atomic mass of one of its isotopes is 186 how many neutrons r in an atom of this isotope?

Back 58

111

Front 59

Ge and Si r in the same group or period?

Back 59

group

Front 60

how many outer level electrons r there in elements 114, 116, 118?

Back 60

4, 6, 8

Front 61

Radioactive Sr is in nuclear waste. how is it hazardous 2 people?

Back 61

its radioactive

Front 62

which metal, metalloid, and nonmetal all have five outer-level electrons?

Back 62

bismuth, arsenic, and nitrogen

Front 63

compare and contrast chlorine and bromine

Back 63

have the same group, properties, number of electrons in outer level
have different state of matter, atomic number, #of protons, atomic mass, ect

Front 64

Rubidium has an atomic number of 37 and a mass number of 85. how many protons neautrons and electrons does it have?

Back 64

37p 48n and 37e

Front 65

He + He =
He + he + he =
he + he + he + he =
he + he + he + he + he =

Back 65

Beryllium
Carbon
Oxygen
Nitrogen