This law states matter can not be created or destroyed just changed in the amounts in a reaction.
What is the Law of Conservation of Mass
100
The rows on the periodic table are called___________.
What is periods
100
These gain electrons from metals and become negative ions in ionic compounds. When joined with others under the same category they form covalent bonds.
What is nonmetals.
100
A mixture in which different materials are spread out unevenly.
What is heterogenous mixture.
200
These have a negative charge.
What is electron
200
This is a bond that forms between atoms when they share electrons.
What is Covalent Bond
200
The columns on the periodic table are called _______?
What is Groups
200
These are group 17 on the periodic table and have 7 electrons in the outermost shell. They join readily alkali metals.
What is halogens
200
A mixture where the different materials are uniformly spread out.
What is homogeneous mixture
300
These have a positive charge.
What is proton.
300
This bond creates ions that are attracted to each other by the positive and negative charges that are created.
What is ionic bond
300
These are found in group 1 of the periodic table. They are shiny, malleable an ductile and conductors of heat and electricity. They are highly reactive and are only found in nature in a combined state.
What is Alkali Metals
300
These have 8 electrons in the outermost shell and are very stable. They are found in group 18 on the periodic table.
What is Noble gases.
300
This is a heterogenous mixture that never settles out. An example would me milk or gelatin.
What is a colloid
400
These are neutral and are part of the mass of an element.
What is neutron
400
This molecule is created when oppositely charged ends are NOT created.
What is non-polar molecules.
400
These are found in Group 2 on the periodic table, they are shiny, malleable and ductile. They are not found free in nature and have 2 electrons in the outermost layer.
What is Alkaline Earth Metals.
400
These have both metallic and nonmetallic properties. They can conduct electricity better than nonmetals but not as well as a metal.
What is a Metalloid.
400
This is a heterogeneous mixture containing a liquid in which visible particles settle.
What is suspension.
500
The atomic number is the number of ____?
What is protons.
500
When one element replaces another in a compound
What is a single replacement reaction.
500
These are found in Groups 3- Groups 12, and have 2 valence electrons in the outer most shell.
What is Transition Metals.
500
Group 13 on the periodic table contains 1 metalloid and has 3 valence electrons.
What is Boron
500
This is the substance being dissolved. Usually a solid.