2019 Mod 4

Question 1

What are valence electrons and why are they so important in chemistry

Answer 1

valence electrons are the electrons exist farthest from an Atoms nucleus they are the electrons with the highest energy level
they determine the chemical behavior of the atom

Question 2

The chemistry of life is based on carbon. This means that all of the molecules which govern life-giving chemistry have carbon Adams in their principal component chemist have often speculated that there could be a life form with the chemistry based on silicon. Why

Answer 2

It has four Valence electrons it is in the same calm as carbon so they have similar chemistry

Question 3

What are the noble gases and why are they important in chemistry

Answer 3

The noble gases are the elements in group 8A they are important because they have the ideal electron configuration

Question 4

What is the octet rule give it to exceptions to this rule

Answer 4

All atoms strive to attain eight valence electrons

The exceptions are hydrogen helium lithium boron and beryllium

Question 5

What is the fundamental difference between metals and nonmetals

Answer 5

Metals give up electrons where is nonmetals take electrons

Question 6

Predict the statement: the number on the top of the column on the periodic table is the number of valence electrons that all electrons have

Answer 6

This only applies to the columns labeled with a

Question 7

What is the difference between an Atom and an ion

Answer 7

Adams have equal number of electrons and protons with no overall charge

And I am protons and electrons are not equal and it has a charge because of the inbalance

Question 8

What is I ionized energy

Answer 8

The Amount of energy needed to take an election away from an Adam

Question 9

Name three periodic properties of Adams

Answer 9

1. ionization energy
2. Electronegative
3. Atomic radius increases

Question 10

Describe how the periodic properties mentioned inconsistent and very as you move up in a column and to the right along a row of the periodic table

Answer 10

ionization energy and electronegative increases as you go up into the right on the periodic table

Atomic radius increases as you go down into the left

Question 11

What is the fundamental difference between ionic compounds and covalent compounds

Answer 11

I am a compound give-and-take elections and are made from ions
Covalent compounds share electrons

Question 12

What is wrong with formula: MG2O2

Answer 12

It should be written in the lowest possible ratio

Question 13

What gases are involved in a three layered protection system in Earth again this high energy light that comes from the sun

Answer 13

Oxygen nitrogen and O-Zone

Question 14

List the Homonuclear diatomics

Answer 14

N2, O2, Cl2, F2, BR2, I2, At2, H2