Chemical Formulas Review

Atomic Structure

100

What are the 2 subatomic particles located in the nucleus 

Protons and Neutrons

200

What subatomic particle is located on the shells (rings,orbitals,levels)

Electrons

300

What is the correct formula to find out the number of neutrons?

M-A=N

400

If elements are in the same group number what characteristics do they have in common? 

Same number of valence electrons and reactivity 

500

What is a model that can help determine the number of electrons in each shell (orbitals,rings,levels)?

Bhor Model

Atoms

100

What is the charge of a proton?

Positive

200

What is the charge of a neutron?

Neutral (no charge)

300

What is the charge of an electron?

Negative

400

If the number of protons change, what characteristic changes also?

Element Name 

500

How many electrons do you need to have in the 2nd and 3rd shell for it to be a stable atom?

8

Periodic Table Trends

100

If my element symbol is Ar (Argon), what other elements have the same number of valence electrons?

Ne (Neon), Kr (Krypton), Xe (Xenon), Rn (Radon), He (Helium) Helium has a valence electrons of 2 but it is still a stable element that is why it is with group 18 which are called the Noble Gases 

200

If I am in period 2 , how many _____ do I have?

Shells (rings,orbitals,levels) and 2 

300

What physical properties does metal have? 

List 2 minimum

-Malleable

- Ductile

- Good Conductors

-Shiny Luster 

400

Where are the metals and nonmetals located on the periodic table?

Metals -left side besides hydrogen

Nonmetals -Right side 

500

Which seven elements have physical properties of nonmetals and metals and are known as what?

Boron, Silicon, Germanium, Arsenic, Antimon, Tellurium, and Polonium. Known as Metalloids 

chemical formulas

100

In chemical formula , what tells us the number of molecules?

Coefficients 

200

In a chemical formula, what tells us the number of atoms?

Subscripts 

300

Where are the coefficients located in a chemical formula?

In front (beginning) of the formula

400

Where are subscripts located in a chemical formula?

To the lower right of the element

500

How many atoms are in this formula , Ag₂H₃O?

6

Mystery

100

What do you do with the subscript outside of the parenthesis in a chemical formula? 

Distribute them to the inside 

200

How many atoms are in this formula?

Cu₂SeO₄

7

300

How many elements are in this formula?

Sr₃(PO₄)₂

3

400

How many atoms are in this formula?

Mg(CIO₃)₂

11

500

How many valence electrons are in group 14?

4