Chemistry: Periodic Table Flashcards
(23 cards)
Name the elements with the following atomic numbers
A) 22
B) 80
C) 13
Titanium, mercury, aluminum
The atomic number tells us how many ——- an element contains in ————————-
Protons, nucleus of an atom.
Name the subatomic particles located in the nucleus of an atom.
a) Protons
b) Neutrons
How many protons do the following elements contain?
A) Oxygen
B) Francium
C) Helium
8, 87, 2
How many neutrons are in the nucleus of the following elements?
A)platinum
B)vanadium
C)cesium
117, 28, 78
A neutral atom will have the same number of ——- as ———.
Protons as electrons
How to remember neutral atom has same number of blank as blank?
NEutrons. E comes second. So Protons as electrons. So PE
How many electrons will a neutral atom of the elements listed below contain?
Fluorine:
Sulfur:
Helium:
9,16,2
Define valence electron
An electron in one of the outer shells surrounding the atom.
How do u know how many valence electrons there are for an atom, by looking at the periodic table.
It is determined by group/ family number…. It goes in order by 1 2 then skips to the boron family where it is three, four, five, six, seven, and eight.
How do you know the number of valence shells by looking at the periodic table?
It is determined by periodic number
Elements have the same number of valence electrons have similar ………
Chemical and physical properties
When do elements have same chemical and physical properties?
When they are located in the same group/ family.
All atoms strive to have —— valence electrons.
Eight
What is the name for having ——– # of electrons?
Octet
Having the octet electrons make atoms ——.
Stable
Atoms will —-, —-, or —– electrons to become ——.
Share, lose, or gain electrons to become stable.
Which family fails to react because their outer energy level is full.
Noble gases family. The last
A physical property….
Can be observed without changing the substance into something else.
3 examples of physical property.
color, smell, freezing point, boiling point, melting point
Evidence of physical property.
A change in...... State of matter (solid, liquid, gas) Size Mass Volume. SOMe (LiGS) are MaSiVo...
A chemical change…
Is when new kinds of matter are formed, observed when a substance interacts with another.
Examples of chemical property
Flammability, reactivity
