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Key Vocab
Elements
Periodic Table
Chemical Reactions
Extra!Extra
100
A substance that can not be broken down into any other substances by chemical or physical means.
What is an element.
100
O is the symbol for:
What is Oxygen
100
The periodic table has this many "groups"
What is eighteen
100
When Na and Cl are combined, they form this common product we find at the dinner table
What is table salt
100
The center of an atom
What is a nucleus
200
THe study of the properties of matter and how matter changes.
What is chemistry.
200
Classified on physical properties such as hardness, shininess, malleability, and ductility
What are metals
200
Helium is part of this group
What is Noble gases
200
The substance to the right of the yield sign in a chemical equation
What is the product
200
Anything that has mass and takes up space
What is matter
300
A substance made of two or more elements chemically combined.
What is a compound.
300
These elements are mixtures of metals
What are alloys or metalloids
300
All the elements on the periodic table can be found naturally, on Earth.
What is False
300
The breakdown of compounds into simpler products
What is decomposition
300
The two most common alkaline earth metals are these two elements
What are calcium and magnesium
400
The smallest particle of an element.
What is an atom.
400
These elements are part of periods 6 and 7, but are placed under the periodic table for convenience (name the two).
What are lanthanides and actinides
400
Name the element symbols for Gold, Silver, and Copper
What are Au, Ag, and Cu
400
In a chemicala equation, the number of atoms present in each element is shown as this.
What is a subscript
400
The periodic table identitifies this number of known elements.
What is 118
500
A law that states: the amount of matter in a reaction does not change
What is Conservation of Mass
500
Name the atomic number and mass of Calcium
What is 20 and 40
500
The professor/scientist who created the Periodic Table
Who is Dimitri Mendeleyev
500
The name of the new substance formed when C and O react with each other.
What is carbon dioxide
500
About 99% of the human body is made up of these 6 elements.
What is oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.