Science Periodic Table Review Flashcards
Proton equal the number of ____________ in an atom.
ELECTRONS!
*Protons equal the same number as electrons
Define isotopes
Atoms of the same element that have the same number of protons but different numbers of neutrons
Define ionic bond
The bonding that involves a transfer of electrons
What is lithium’s valence number (electrons)?
1
Elements are made up of one type of _________.
Atom
Define metalloid
An element that conducts electric current better than a nonmetal but as well as a metal. (In the middle of nonmetals and metals)
What is the valence number if a atom?
The number of electrons of the outermost energy level
What makes an atom neutral?
When both protons and electrons are the same number (equal)
Define molecule. Give an example.
When a group of atoms are bonded together.
An example would be water.
What accepts electrons, has a negative valence, and are on the right side of the periodic table?
Non-metals
What family has a full outer shell?
Noble gases
Chlorine - which element has similar properties to it?
Fluorine, Bromine, Iodine, and Astatine. (All are in the halogen family)
Define compound
When combining two elements together, you get a compound.
Elements in the same family or group have the same ___________ ____________
Bonding Electrons
Define covalent bond.
Bonding in which electrons are shared.
Why don’t electrons leave the atom?
Because electrons are negative and protons are positive - they go together
Hydrogen and sodium are members of which family?
Alkali ( |A)
How many electrons are in the outer energy level of the halogen, alkali - metal, and noble gases family?
Halogen-> 7
Alkali-metal-> 1
Noble gases-> 8
Where do you see similarities between elements, in families/groups or periods?
Families/groups
What property determines how atoms combine to form a compound?
Balance electrons
What do you call a charged atom?
Ion
*Remember, Ions are charged atoms, protons are POSITIVELY charged atoms)
What family had 7 balance electrons?
Alkaline
What family are ALL gases?
Noble gases
What family is considered inert?
Noble gases
Silver is found where on the periodic table?
Transition metals
Potassium Bromide
KBr
- 1+ 1-
K Br = KBr
Sodium Chloride
NaCl
- 1+ 1-
Na Cl =. NaCl
Which element had similar properties to sulfur?
Oxygen, Selenium, Tellurium, and Polonium
All sort of the Oxygen Family
Which family gains 1 electron?
Halogens (V||A)
Which family will lose 1 electron?
Alkali (|A)
List all the families in order.
Alkali (|A)
Alkaline (||A)
Boron (|||A)
Carbon (|VA)
Nitrogen (VA)
Oxygen (V|A)
Halogens (V||A)
Noble Gases (V|||A)
Metals or Non-metals - Which tend to gain electrons?
Non-metals
All members of the Boron family have ____ electrons in the outermost energy level.
3
What family is Lithium in?
Alkali (|A)
What do you call the 2 rows under the periodic table?
Non- Earth-metals ( The lanthanide and Actinide series)
Which type of element tend to “gain” electrons? “Lose” electrons?
Gain- Non-metals
Lose- Metals
What family has 2 valence electrons? 1 valence electron?
Alkaline (||A), and Alkali (|A)
What is a valence electron?
The number of electrons in the outermost energy level.
Bromine and chlorine are in what family?
Halogens
List 3 transition metals.
Gold, Silver, and Copper ( family |B)
Where is uranium located on the periodic table?
In the Actinide Series
What makes an atom neutral?
When protons equal electrons.
When a metal combines with a halogen, what kind of compound is formed?
It forms a salt compound.
Elements in the same _________ have similar characteristics or properties.
Family
