Vocabulary
Chemical/Physical Change
Balanced Equations
Acids and Bases
Periodic Table
100
Two or more substances that are mixed together but not chemically combined.
What is a mixture?
100
burning and digesting bread
What are examples of chemical change?
100
Balanced or not? CO₂ + H₂O -- C₂H₆ + O₂
What is not balanced?
100
Lemon is an example of an acid, neutral or base.
What is an acid?
100
The three main groups of the Periodic Table
What is a metal, metalloids and nonmetals?
200
A pure substance that cannot be broken down into other substances.
What is an element?
200
You bend and break a paper clip.
What is a physical change?
200
The Law of Conservation of Matter (Mass)
What is the reason equations must be balanced?
200
Soap is an example of an acid, neutral or base?
What is a base?
200
Two characteristics of metals
What is conductivity, malleable, ductile, shiny and hard?
300
A pure substance made of two or more elements chemically combined.
What is a compound?
300
The hardness, texture, color, state of matter, flexibility and density
What are physical properties?
300
2CO₂ + H₂O ---- C₂O₃ + H₂
What is balanced?
300
Two characteristics of an acid
What is tastes sour, sticky, irritates skin and metals?
300
Two Characteristics of metalloids
What is semiconductors, brittle and solid?
400
A single kind of matter that is pure and has a specific set of properties.
What is a substance?
400
When an object changes from a solid to a liquid.
What is a physical change?
400
How many Oxygen particles? 4H₂O₂
What is 8?
400
Tastes bitter, breaks down oils and grease, slimy
What is a base?
400
Two characteristics of Nonmetals
What is poor conductors, mainly gasses, brittle if solid?
500
A mixture in which substances are evenly distributed through out the mixture.
What is a homogeneous mixture?
500
When an object has a new odor, fizzing, flash of light, and temperature change.
What is a chemical change?
500
4Fe + 3O₂ ----- 2Fe₂O₃
What is balanced?
500
What can be added to my garden soil if it is too acidic?
What is lime (a base)? or carbob (ashes)?
500
The only metal that is a liquid in its natural state
What is mercury?
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