Bonds
What is an Chemical Formula?
Is a way of presenting information about the chemical proportions of atoms
Who was the first person to create the periodic table and what was Moseley?
Mendeleev and English Physicist
What are they representative groups on the periodic table?
The ones that stick up
What subatomic particle is the biggest?
proton
Out of the plum pudding model and the nuclear model which one is older
Plum pudding
What is a covalent and ionic bond?
Covalent bonding involves the sharing of electrons between two or more atoms. Ionic bonds form when two or more ions come together and are held together by charge differences.
What is the difference between groups and periods on the periodic table and how many groups and periods are there on the periodic table?
Groups= vertical columns Periods= horizontal rows and 18 groups and 7 periods
What does Nitrogen do to become stable?
Gain 3
What is Silicon's atomic number?
14
Who made the first atom model
Dalton
What holds different types of bonds together?
Atomic bonds
Where are the metals, nonmetals, and metalloids located in the periodic table?
Metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to the right of the line, and the elements immediately adjacent to the line are the metalloids.
Do nonmetals lose or gain?
Gain
How many protons are in Hydrogen-1?
1pt
Who made up the gold foil experiment
Rutherford
How are atoms combined in a ratio?
They are combined as a whole number because it can not be a fraction.
What do groups have in common other than elements in the same group have the same number of valence electrons?
Similar Chemical Behavior and Physical Properties
How many atoms does an element need to be stable?
Have 8 dots
What's the Chemical Symbol System of Carbon?
mass# 12
element symbol C
protons 6
What did Bohr add to Rutherford's model
rings around the atom
How are the properties of ionic and covalent compounds different?
Ionic compounds tend to have higher melting and boiling points than covalent compounds, but typically covalent bonds do not.
When going from the left to the right side of the periodic table you gradually…the atomic radius and Transition elements are…reactive than representative elements?
Decrease and Less
How many valence electrons does group 5 have ?
5
What are two subatomic particles and what are their charges?
protons=positive
neutrons=negative
What did Thomson add to Daltons model
he added protons and electrons