The term used to describe anything that has mass and takes up space.
What is matter?
100
You subtract atomic number from the atomic mass.
How do you find the number of neutrons in an element?
100
Lavoisier showed that.
Who showed that there was no changed in mass during common chemical reactions such as burning ans rusting?
100
Gasses, liquids, and solids.
What are the three basic states of matter?
100
Metals, metalloids, and nonmetals.
What are the three general categories of the classification of elements?
200
A particle in an atom with a negative electric charge.
What is electron?
200
It is in the Actinide series (Abbreviation- U)
What series is Uranium in?
200
2 hydrogen atoms and1 oxygen atom.
How do you form a water molecule?
200
The three letter symbols are based on the number of protons in the element. These elements have been discovered so recently that they do not yet have permenet names.
Why do some elements have three-letter symbols?
300
Matter made up of only one type of atom.
What is element?
300
groups.
What are the columes of elements called?
300
atoms cant be created or destroyed.
Can atoms be created or destroyed?
300
A compound is a form of matter that is made when two or more elements combine chemically. A mixture when two elements are put together but do not change substance. In a compound the substance changes.
What is the diiference between a compound and mixture?
300
They are mixtures that you can't see the different parts of.
EX. Kool-Aid
What are homogeneous mixtures?
400
A form of matter that is made when two or more elements combing chemically.
What is compound?
400
periods.
What are the rows of elements in the periodic table?
400
Because there are an equal number of protons as there are electrons.(they balance each other out)
Why does the negative charge of electrons equal the positive charge of protons?
400
Some are abbrieviations and some are latin words.
What are some reasons that the elements symbol is what it is.
400
They are mixtures that you can see the different parts of.
EX. Fruit Salad
What are Heterogeneous mixtures?
500
Made up of symbols and numbers that tell what elements are in a compound and what their ratios are.
What is chemical formula?
500
The last period of the periodic table.
Where are all the noble gasses in the periodic table?
500
Electrons, Protons, and Neutrons.
What are in atoms that make up all types of matter?