Subatomic Ratios
Matter
The Periodic Table
ECM
Misc.
100

A positively charged subatomic particle

What is a proton? 

100
A change that does not produce a new substance.
What is a Physical Change?
100
This is a chart which organizes the chemical elements.
What is The Periodic Table?
100
A combination of two or more chemically-bonded elements.
What is a Compound?
100

A category of elements which excludes B, C, N, O, F, Ne, AR, Cl, S, P, Br, Kr

What are metals? 

200

A negatively charged particle

What is an electron? 

200
A change that produces a new substance.
What is a Chemical Change?
200
Number of protons in the Nucleus.
What is The Atomic Number?
200
A combination of two or more atoms.
What is a Molecule?
200

The region where the protons and neutrons are found in an atom

What is the nucleus? 

300

A subatomic particle that has almost no mass

What is an electron? 

300

A mixture in which the composition is not uniform throughout

What is a heterogenous mixture? 

300
The sum of the number of Protons plus Neutrons in the Nucleus.
What is The Atomic Mass?
300

An sample in which all particles match each other

What is a pure substance? 

300

Number of valence electrons in one atom of Lithium

What is one? 

400
When the number of neutrons exceeds the number of protons

What is an isotope?

400

Name of the compound SeF

What is Selenium Monoflouride?

400
Columns or multiple columns in the periodic table.
What is a Group?
400

When two or more nonmetal elements are chemically combined

What are covalent bonds? 

400

Na

What is the element symbol for Sodium? 

500
When the atom has an imbalance of electrons and protons

What is an ion? 

500
A measure of how much mass is contained in a given unit volume.
What is Density?
500

The most stable elements on the Periodic Table

What are the noble gasses (group 18)?

500

A chemical combination of a metal and nonmetal

What is an ionic bond? 

500

Who invented the modern periodic table? 

Who is Dimitri Mendeleev? 

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