topic 1 test

Question 1

an element atomic ________ is the average of all the isotopes of an element

Answer 1

mass

Question 2

t or f
the word periodic means “in a regular, repeated pattern”

Answer 2

True

Question 3

T or F
when you write the chemical symbols, remember to capitalize every letter.

Answer 3

false

Question 4

t or f
if u examine the periodic table u can see that nonmetals make up most of the elements

Answer 4

false

Question 5

t or f
Mendeleev’s original periodic table was sorted by Atomic Mass instead of Atomic Number

Answer 5

true

Question 6

Generally speaking, the metals are found on the ( left/ right) and nonmetals are found on the ( left/ right)

Answer 6

left; right

Question 7

The horizontal rows in the periodic table are known as

Answer 7

periods

Question 8

The vertical columns in the periodic table are known as

Answer 8

groups and families

Question 9

what is titanium

Answer 9

transition metals

Question 10

what is not true about abt subatmic particles of an atom

Answer 10

nucleon

Question 11

t or f
Halogens r reactive while the noble gases are not reactive

Answer 11

true

Question 12

carbon is a ______

Answer 12

nonmetal

Question 13

what element is the friendliest element

Answer 13

hydrogen

Question 14

Lanthandies ad actinides r technically on their own separate periodic table

Answer 14

false

Question 15

how many groups or families are there

Answer 15

18

Question 16

how is the modern periodic table organized

Answer 16

number; mass

Question 17

t or F
transuranium elements are not stable and each of them decay radioactivetly into other elements

Answer 17

true

Question 18

The ________ electron of an atom are those which have the highest energy they are the outermost energy level

Answer 18

Valence

Question 19

each atom has a certain number of valence electrons. The number of valence electrons is a specific to each element. An atom may have from one to ____________ valence

Answer 19

eight

Question 20

Elements are classified as metals, nonmetals, or _________.

Answer 20

metalloids

Question 21

The ease and speed with which an element combines or reacts with other substances called its

Answer 21

Reactivity

Question 22

metals don’t react with other metals, but they do react with nonmetals

Answer 22

true

Question 23

A________ material is one that can hammered or rolled into flat sheets or other shapes

Answer 23

malleable

Question 24

A___________ material is one that can be pulled out, or drawn, into long wires

Answer 24

ductile

Question 25

( Electrical/ Thermal) conductivity is the ability of an Object to transfer heat (electrical/thermal ) conductivity is the ability to carry electric current

Answer 25

thermal/ Electrical

Question 26

Why do helium and neon have similar chemical properties

Answer 26

They each have a valence electrons

Question 27

What physical property of metal makes them shiny

Answer 27

Luster

Question 28

What state are nonmetals usually in at room temperature

Answer 28

Gas

Question 29

A _______ is a substance that conducts electrical current under some conditions but not other

Answer 29

Semiconductor

Question 30

True or false Bohr models only show the valence electrons while electric diagrams show all electrons of an atom

Answer 30

False

Question 31

True or false an element valence electron determines how reactive it is

Answer 31

True

Question 32

What is an atom or group of atoms with either positive or negative charge called

Answer 32

Ion

Question 33

When a neutral atom games and electron it becomes more

Answer 33

Negative

Question 34

When a neutral atom loses an electron it becomes more

Answer 34

Positive

Question 35

Ionic bonds are usually between

Answer 35

Metals and nonmetals

Question 36

Covalent bonds are usually bonds between

Answer 36

Nonmetals and nonmetals

Question 37

True or false covalent bonding can only occur between two atoms of different elements

Answer 37

False

Question 38

An ion made of more than one atom is called in

Answer 38

Platomic ion

Question 39

A neutral group of atoms joined by covalent bonding is called

Answer 39

Molecule

Question 40

Each of bond requires at least

Answer 40

Two electrons

Question 41

These types of bonds have a slight electron charge on different parts of the molecule

Answer 41

Polar bonds

Question 42

True or false molecules made up of the same type of element can form polar bonds

Answer 42

False

Question 43

CO2 is an example of

Answer 43

Nonpolar bonds

Question 44

H2O is an example of

Answer 44

Polar bonds

Question 45

Ca0 is an example of an

Answer 45

Ionic bond and polar bond

Question 46

02 is an example of

Answer 46

Nonpolar Bond

Question 47

True or false ionic compounds can conduct electricity when solid

Answer 47

False

Question 48

True or false it only takes a little amount of energy to break apart ionic

Answer 48

False

Question 49

t or f it only takes a little bit of energy to break a part ionic bonds

Answer 49

false

Question 50

True or false covalent compounds have a relatively low melting point

Answer 50

True

Question 51

True or false metal atoms have ionic bonds are more likely to receive electrons

Answer 51

False

Question 52

Polarity is a property of

Answer 52

Ionic bonds

Question 53

Charged ions or charged pools are attracted to what type of ions impulse

Answer 53

Opposite

Question 54

Overall charge of a molecule is

Answer 54

Neutral

Question 55

True false and a polar bond the stronger atom forms the positive pull

Answer 55

False