Test 2

Question 1

Which of the following bonds form between nitrogen and oxygen?

Answer 1

Covalent

Question 2

Which of the following is responsible for the identification of an atom?

Answer 2

Protons

Question 3

Which group is the element in? How many valence electrons does it have?
HINT: The Valence Electrons are in the outermost ring.
Protons= Electrons

Answer 3

Group 14 it has 4 valence Electrons

Question 4

The smallest unit of matter that cannot be broken down by ordinary means is the _________ and is found in _________. Elements are generally inseparable and are formed into __________ with two or more elements:

Answer 4

atom, molecules, compounds

Question 5

Using your periodic table:
Identify which bonds the following elements would form:

Answer 5

Ionic = Cs and Cl
Ionic = K and I
Covalent = Mg and N
Covalent = H and O

Question 6

Which of the following is responsible for how atoms bond? (They are on the outer ring of the atom)

Answer 6

Electrons

Question 7

An atom was found to have 26 protons and 30 neutrons. What element is this atom?

Answer 7

Iron, Fe

Question 8

Using the Periodic Table, find the number of NEUTRONS in one Aluminum (Al) atom. Be sure to round if necessary

Answer 8

14

Question 9

What is the atom count for this molecule Ba (OH)2?

Answer 9

5

Question 10

Select ALL of the subatomic particles that you will NOT find in an atom’s structure

Answer 10

Potassium, Nitrogen, Metals

Question 11

Which of the following is an example of a chemical change?

Answer 11

Scrambling an egg

Question 12

The following are examples of heterogeneous mixtures

Answer 12

Salad, Lucky Charm Cereal