Atoms & Elements Powerpoint 2

Question 1

Who is responsible for the discovery of the law of conservation of mass?

Answer 1

Lavoisier

Question 2

The law of conservation mass makes two important statements being ?

Answer 2

In a chemical reaction, mass is neither created nor destroyed
therefore
total mass of reactants = total mass of products

Question 3

Light is made of ?

Answer 3

photons

Question 4

Rays are made of ?

Answer 4

glowing particles

Question 5

Protons carry what charge?

Answer 5

+1

Question 6

Electrons carry what charge?

Answer 6

-1

Question 7

Neutrons carry what charge?

Answer 7

0, neutral

Question 8

Does Li ^3+ gain or lose electrons?

Answer 8

It loses 3 electrons

Question 9

Does Se ^2- gain or lose electrons?

Answer 9

It gains 2 electrons

Question 10

Mass number = what and what?

Answer 10

Protons and Neutrons

Question 11

Anions (ex. Fe 2-) are named by changing the ending of the element name to ?

Answer 11

-ide

Question 12

Fluorine | F- = Fluor___?

Answer 12

Fluoride

Question 13

Oxygen| O ^2- =Ox___?

Answer 13

Oxide

Question 14

Which of the following statements are true about Group 1a in the periodic table?
a) group 1a are non metals
b) group 1a are alkaline earth metals
c) group 1a are alkaline metals
d) group 1a are halogens

Answer 14

Correct Answer:
c) Group 1a are alkaline metals ( EXCEPT HYDROGEN)

Question 15

Select from the following statements all that are true about GROUP 2A in the periodic table?
a) group 2a are non metals
b) group 2a are alkaline earth metals
c) group 2a are alkaline metals
d) Mg & Ca caused this group to be classified this way

Answer 15

Correct Answer:
b) group 2a are alkaline earth metals
d) Mg & Ca caused this group to be classified this way

Question 16

Name all the elements considered Metalloids

Answer 16

Boron
Silicone
Germanium
Arsenic
Antimony
Tellurium
Polonium
Astatine

Question 17

Group 7a in the periodic table = ?

Answer 17

Halogens

Question 18

Group 8a in the periodic table = ?

Answer 18

Noble Gases

Question 19

Hg=
Pb=
Au=
Ag=
Sn=

Answer 19

Hg= Mercury
Pb= Lead
Au= Gold
Ag= Silver
Sn= Tin

Question 20

Metals are _______ at room temp.
______ is the only liquid metal.
Typically _______________.
Conducts ____________.
Conducts ___________.
Malleable can be _________.
!!_______ electrons and form _______ in reactions!!
About 75% of the elements are ______.

Answer 20

Metals are SOLID at room temp.
MERCURY is the only liquid metal.
Typically SHINY/REFLECTIVE
Conducts HEAT.
Conducts ELECTRICITY.
Malleable can be SHAPED.
!!LOSES electrons and forms CATIONS in reaction.!!
About 75% of the elements are METALS.

Question 21

Nonmetals can be ______, ________, or _____.
Non metals are ________ conductors of _________.
Non metals are ________ conductors of ___________.
Non metal solids are _______, & can be ________.
!! Non metals ______ electrons, that form _______ in reactions!!
__________ is also a non metal.

Answer 21

Nonmetals cane be SOLID, LIQUID, or GAS.
Nonmetals are POOR conductors of HEAT.
Nonmetals are POOR conductors of ELECTRICITY.
Nonmetal solids are BRITTLE, and can be POWDER.
!! Nonmetals GAIN electrons, that form ANIONS in reactions!!
HYDROGEN is also a nonmetal.

Question 22

Metalloids are very similar to ___________.
Metalloids are_______.
Metalloids are ______, not _______.
Metalloid’s unique property is that they are GREAT __________, aka great at producing ___________.
Metalloids conduct HEAT better than _________, but not as well as __________.

Answer 22

Metalloids are very similar to NONMETALS.
Metalloids are SOLID.
Metalloids are DULL, NOT SHINY.
Metalloid’s unique property is that they are GREAT SEMICONDUCTORS, aka great at producing ELECTRICITY.
Metalloids conduct HEAT better than NON METALS, but not as well as METALS.

Question 23

Weight of mole = what unit?

Answer 23

Weight of MOLE = GRAMS
Ex. 1 mol of Au = 196.97g

Question 24

Weight of atom = what unit?

Answer 24

Weight of ATOM = AMU
Ex. 1 Zn atom weighs = 65.38 amu