What is a group and a period on the periodic table?
Group: Vertical Columns on a Periodic Table
Period: Horizontal Rows on a Periodic Table
100
Nonmetals form negative ions called..
Anions
200
What is Matter?
Anything that takes up space and has a mass.
200
Who had the most accurate atomic theory?
Niels Bohr
200
What is a half-life?
Half- Life is the amount of time required for a decaying substance to lose half of its original amount.
200
What group is the Noble Gases located in?
Group 18
200
How are Ionic bonds formed?
By the transfer of electrons.
300
The melting of ice, freezing of water, the conversion of water to steam are all examples of:
A Physical Change
300
Where is the atomic mass number located on the periodic table?
Very Bottom
300
What is the Beta Symbol?
0
-1 e
300
What is the octet rule?
Element tends to form compounds base on the easiest ways to gain 8 valence electrons.
300
Name Na2Co3 . (Ionic Bonds)
Sodium Carbonate
400
What is the difference between a physical and chemical property?
Physical property are the things that can change, but will not make a new substance. A chemical property makes a new substance and you can't get it back.
400
How do you find the number of neutrons?
Atomic Mass (Rounded) Minus the Atomic Number equals neutrons.
400
What is the difference between Nuclear Fusion and Fission?
Nuclear Fusion is when the nucleus of an atom splits in order to form a more stable nucleus, while nuclear fission is the combining of small nuclei into larger ones.
400
The four main periodic trends are..
Atomic Radius, Ionization energy, Electronegativity and Electron Affinity.
400
Name CO (Covalent Bonds)
Carbon Monoxide.
500
What are some of examples of evidence for chemical changes?
Evolution of gas, formation of precipitation, releases or absorption of energy and heat released.
500
What are the principles of the atomic theory?
Elements are composed of indivisible particles called atoms.
All atoms of a given element are identical.
Compounds are composed of all atoms of one or more elements and will form only in whole number ratios.
A chemical reaction involves a combination separation or rearrangement of atoms not the creation or destruction.
500
Which form of decay has the highest penetrating power?
Gamma Decay
500
What atomic trend is the exception for increasing energy going across a period and decreases going down a group?
Atomic Radius
500
What is the difference between Polar and Nonpolar bonds?
Polar is when electron are shared unequally between the atoms. Nonpolar are bonds when electrons are shared equally.