Show:
Atoms
Elements and Isotopes
Chemical Bonds
Chemical Compounds
Misc.
100
The basic unit of matter
What is an atom?
100
Atoms of the same element that differ in the # of neutrons they contain
What are isotopes?
100
Holds atoms in compunds together
What are bonds?
100
Composition of a molecule of water
What are 2 hydrogen and 1 oxygen?
100
The bond between two hydrogen molecules
What is covalent bond?
200
Maintains a positive charge
What is a proton?
200
Identification of isotopes
What is mass #?
200
Shares electrons betweeen 2 or more atoms
What are covalent bonds?
200
A substance formed by chemical combinations of 2 or more elements
What is a compound?
200
Sodium and Chlorine form this bond
What is Ionic bond?
300
Indicates the number of electrons within the electron shell
What is the atomic number?
300
Pure substance consisting entirely of one type of atom
What is an element?
300
True or False? When an atom loses an electron it develops a negative charge?
What is False?
300
True or False: The physical and chemical properties of a cojpund are usually very different from those of the elements from which it is formed.
What is True?
300
a poisonous, greenish gas used to kill many soldiers in WWI
What is Chlorine?
400
Subatomic particles of an atom
What are protons, electrons, and neutrons?
400
Nuclei are unstableand break down at a constant rate
What is radioactive isotope?
400
The transfer of electrons between atoms
What is an ionic bond?
400
Scientist show the composition of comopunds by a shorthand
What is chemical formula?
400
True or False: van der Waals forces are stronger than ionic or covalent bonds.
What is False?
500
The number of proton in the element Aluminum
What is 13?
500
Uses of radioactive isotopes
What are deterimining ages of rocsk, teating cancer, killing bacteria in food, following the movements of substances within organisms?
500
The design of a gecko's feet enable it to climb up vertical surfaces
What are van der Waals Forces?
500
The chemical formula for table salt
What is NaCl?
500
Arrangement of elements in the table
What is in order by increasing atomic number?