Atoms
Protons, neutrons, and electrons
What are the three main subatomic particles in an atom?
Information that the Periodic Table provides us about the elements. (think element square)
What is the atomic number, atomic mass, element symbol, and often the state of matter at room temperature?
Soft and brittle, non-malleable, poor conductor of electricity, dull..... these are properties of what element group: Metals, non-metals, or metalloids?
What are non-metals?
An atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.
What is an Ion?
Electrons in the outermost shell of an atom that participate in chemical bonding.
What are valence electrons?
The only two subatomic particles included in the atomic mass.
What are neutrons and protons?
Elements arranged in the Periodic Table how?
What is elements are arranged in order of increasing atomic number and grouped by similar chemical properties.
I can find any element on the periodic table if I know this one subatomic particle.
What is a proton?
Positively charged ion.
What is a cation?
How many valence electrons do alkali metals have?
What is one valence electron?
Only subatomic particle that makes up the atomic number.
What is a proton?
The group of elements along the stair-case on the periodic table.
What are metalloids?
shiny, metallic luster, good conductors, malleable, ductile, generally solid at room temp (except 1 element), high melting point, tends to lose electrons forming cations..... What group of elements is this?
What are metals?
Negatively charged Ion.
What is an anion?
As you move across a period, from left to right, the number of valence electrons increases or decreases?
What is increases?
This number determines the identity of an element, representing the number of protons in the nucleus.
What is the atomic number?
Most of the elements on the periodic table belong to what group?
What are metals?
Where are highly reactive elements on the periodic table located?
Alkali metals (group 1, except hydrogen) because they have only 1 valence electron and Halogens (group 17) because they only need 1 electron to complete the outer most shell.
A variant of an element that has the same number of protons but a different number of neutrons.
What is an Isotope?
The numbers of electrons for the first 3 energy levels. (think the Octet rule)
What is 2-8-8?
Subatomic particle that has no charge.
What is a neutron?
Can be shiny but are brittle, semiconductors, chemical behavior varies, generally solid at room temp..... What group of elements is this?
What are metalloids?
What is a group/family on the periodic table?
Elements within the same group/family share similar chemical properties because they have the same number of valence electrons.
When the number of neutrons in an isotope changes so does the what?
What is the atomic mass?
Why do noble gases not typically react with other elements by bonding?
They have a full outer shell of valence electrons.