All about Atoms
Elements
Periodic Table
Bohr Model
Extras
100
All __________ is made up of tiny particles called atoms
matter
100
Elements are substances that CAN OR CANNOT be broken down into simpler substances.
cannot
100
What is the atomic number of Potassium?
19
100
What are the charges of each subatomic particle in the atom?
Proton - positive
Neutron - neutral, no charge
Electron - negative
100
Is an element a pure or impure substance?
pure- only one type of atom
200
Protons, neutrons, and electrons can be defined as _________ _____________.
subatomic particles
200
An element is composed of atoms that have the same number of ___________ in their nucleus
protons
200
What is the atomic mass of Potassium?
Rounds to 39
200
How do you determine how many protons to draw in a Bohr Model?
By using the periodic table to find an element's atomic number
200
Is a compound a pure or impure substance?
Impure- multiple type of atoms
300
Atoms are mostly _________ space
empty
300
Elements contain ______ type of atom. [INSERT A NUMBER]
one
300
How many protons and electrons do Magnesium have?
12
300
How do you determine how many neutrons to draw in a Bohr Model?
Round the atomic mass to the nearest whole number and subtract the atomic number
300
blue dot - electron
orange dot - neutron
green dot - proton
orange & green dot - nucleus
rings - energy levels or energy shells
400
The nucleus is comprised of which two subatomic particles?
protons and neutrons
400
What is a noble gas?`
A noble gas is when the last outer energy shell (valence shell) is completely full of electrons (known as valence electrons). Found in the last column of the periodic table.
Examples: He, Ne, Ar
400
How many neutrons does Iron have?
56 - 26 = 30
400
Which element is represented in this Bohr Model?
Fluorine
400
Which of the following CANNOT be separated: element/molecule, compound, mixture?
element / molecule
500
Explain how atoms make up all substances around you?
Various answers accepted
500
An atom's mass is not dependent on which subatomic particle?
Electrons - have a mass of 1/1,850 of a proton (remember: if you cut a cake 1,850 times, you would end up eating a crumb of the cake. The crumb is the electron mass)
500
Oxygen is in the second row, and has two energy shells that electrons occupy.
Rows on the periodic table are also known as ______________.
periods
500
Draw the Bohr Model of Hydrogen
nucleus will contain 1 proton and 0 neutrons
1 energy shell
1 electron in the first/only energy shell
500
Which of the following are chemically bonded? Element, molecule, compound
molecules and compounds are chemically bonded together