Unit 1 Practice

Atoms

100

Name the three subatomic particles within an atom

Proton Neutron Electron

200

Where are protons located?

The nucleus

300

What are electrons located?

Electron Cloud

400

How can you find the number of neutrons of an atom?

M-A=N

500

Protons + Neutrons = ____________

Protons + Neutrons = the mass number of an atom

Isotopes

100

If an atom has 12 protons and 15 neutrons, what is its isotope name?

Magnesium - 27

200

If an element has 20 protons, 20 electrons, and 20 neutrons, What is its ATOMIC NUMBER?

20 Atomic Number = Number of Protons

300

An atoms Mass Number is 30.... Keeping in mind that the atomic number is 17, what can you tell about the atom? ((Hint: How do you find the number of neutrons?))

It has 13 neutrons.. mass number - atomic number = neutrons 30 - 17= 13

400

Neutral atoms always have an equal number of what two subatomic particles?

protons and electrons

500

Which about isotopes is true? a. they have the same number of neutrons b. they have a different atomic number c. they have the same number of protons

C. They have the same number of protons

Ions

100

How many valence electrons does lithium have?

1

200

What is the charge of Aluminum when he becomes an ion?

Al +3

300

Does oxygen give or take electrons when he becomes an ion?

Take

400

If you compare an ion model to an isotope model, what would be the same?

Atomic # (protons)... Daily Double

500

To change Li to Li+, you need to:

remove one electron

3 Main Groups

100

What do Carbon-12 and Carbon- 13 have in common?

Same number of protons (atomic number)..

200

Is Al a metalloid? How do you know

no- its a metal although it borders the bolded line on PT...*list property

300

List 4 properties of metals

answers vary

400

List 3 properties of nonmetals

answers vary

500

Compare/contrast sugar and salt from our lab last week. Identify ea substance and why each behaved the way it did.

answers vary...must mentioned salt is ionic compound and sugar is covalent and use properties to justify response...Daily Double

Ionic/Covalent Compounds

100

Name the following formula:

RaCl₂

Radium Chloride

200

Give the formula for the following:

sulfur pentafluoride

SF₅

300

Name the following formula:

N₃O₉

trinitrogen nonoxide 

400

Give the formula for the following:

strontium phosphoride 

Sr₃P₂

500

Give the formula for the following:

sodium nitride 

Na₃N