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The Periodic Table
ATOMS
ATOMS #2
Charges
POTPOURRI
100
Columns of elements that have similar chemical properties
What are groups?
100
positively charged particles in the nucleus of an atom
What is a proton
100
How do you determine the number of protons in an element
it is the same as the atomic number
100
What happens to the charge of an atom if it gives up 2 electrons
+2
100
What are your student teacher's names?
Ms. Findlay and Ms. Latch
200
rows where atomic number increases and they indicate the number of electron shells
What are rows?
200
negatively charged particles found in the electron cloud surrounding the nuclues
What is an electron
200
How do you determine the number of valence electrons in an element?
If it is in groups 1A-8A the number of valence electons will be the same as the group number it is in.
200
What happens to the charge of an atom if it takes 3 electrons?
-3
200
Who won the superbowl this year?
the Baltimore Ravens
300
Found on the right side of the periodic table, they are usually gases or brittle solids at room temperature, poor conductors of heat and electricity
What are nonmetals
300
weighted average mass of isotopes of an element
What is atomic mass
300
is the nuclues of an atom positive, negative or neutral?
POSITIVE!! it contains only positive and neutral particles meaning it must be neutral
300
Given Sodium and oxygen, what would their chemical formula be?
Na2O
300
Why does pure water not conduct electricity?
Pure water is made up of two non metals that are covalently bonded and do not allow the electricity to pass through.
400
Found between metals and nonmetals and share characteristics of both
What are metalloids
400
the smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms held together by a bond
What is a molecule
400
How does the arrangement of the electrons change as you move down the columns?
the number of electon shells increases as you go down a row
400
Sodium and Chlorine will form NaCl but not Na2Cl or NaCl3. Why?
Along with being stable elements want to be neutral. Na gives up 1 electrom so it becomes Na +1. Cl takes 1 electron so it become Cl-1. The only way to combine both into a neutral compund is by having one of each
400
What is the law of conservation of mass?
matter cannot be created or destroyed. It can only change form
500
Group 1, silvery solids that are highly reactive
What is alkali metals
500
positively or negatively charged atom
What is an ion
500
How do you determine the number of core electrons?
take the atomic number and subtract the number of valence electrons
500
What is the rule of 8
Octet Rule. All elements want to become stable and to do this they must have a full valence shell which means they need 8 electrons in the outermost shell.
500
This is the variable you can control in an experiment
independent variable