chem test

Question 1

How do I determine the number of protons electrons and neutrons in a neutral atom?

Answer 1

atomic #= protons + electrons
atomic # - atomic mass= neutrons

Question 2

determine the atomic mass of an element by its number of protons and neutrons

Answer 2

protons + neutrons

Question 3

Describe the four main properties of metals and differences between them and nonmetals

Answer 3

metals are shiny, metals are conductors of heat and electricity, metals are malleable, metals are ductile

Question 4

Patterns of the periodic table

Answer 4

The rows are called periods and as they move from left to right the atomic number increases

Question 5

define period and family with respect to the period

Answer 5

Periods are rows and families are groups and columns

Question 6

Recognize the major trends of the different families with the periodic table- Alkali metals

Answer 6

they’re highly reactive and soft and shiny

Question 7

Recognize the major trends of the different families with the periodic table- Alkali earth metals

Answer 7

Very reactive but less than alkali have higher melting points

Question 8

Recognize the major trends of the different families with the periodic table- transition metals

Answer 8

good conductors of heat and electricity

Question 9

Recognize the major trends of the different families with the periodic table- semi-metals/ metalloids

Answer 9

metallic and non metallic characteristics

Question 10

Recognize the major trends of the different families with the periodic table- halogens

Answer 10

highly reactive non metals

Question 11

Recognize the major trends of the different families with the periodic table- noble gases

Answer 11

very stable and unreactive and colourless

Question 12

define ion and ionic charge 

Answer 12

Ion is an atom that gained or lost electrons to make a full valence shell

The ionic charge is the positive or negative charge the ion has

Question 13

How to calculate the charge of an ion

Answer 13

The charge of an ion is equal to the number of electrons gained or lost to make a full valence shell ex= [ion] 2+ that example would mean that the Adam lost two electrons

Question 14

Differentiate between an atom and ion

Answer 14

an atom is made up of electrons, protons and neutrons, and an ion is a special type of atom that Gander lost electrons in order to make a full valence shell

Question 15

Determine the number of valence electrons

Answer 15

Look on the periodic table

Question 16

How is an ionic bond formed?

Answer 16

One Adam shares electrons to the other atom and they become an ionic compound

Question 17

for an ionic compound, what types of elements are involved in how many of each element?

Answer 17

you usually have one metal and one nonmetal the number of how many can vary

Question 18

Determine the reactants and products in a chemical reaction

Answer 18

H2+O2= H2O

H2+O2 are the reactants H2O is the product of