Definitions
What is a closed system?
A place where matter can't escape
What is synthesis?
To put two or more elements or compunds together to make a more complex substance.
What is "H" is the periodic table?
Hydrogen
What is a physical change?
A change that alters the form or appearance of a substance without changing it into a different substance
What symbol(s) represent a proton
+ or p+
What is an open system?
A place where matter can escape
What is decomposition?
When chemicals break down into simpler products
What is "O" in the periodic table?
Oxygen
What is a chemical change?
A change that produces one or more substances
What symbol(s) represent an electron
- or e-
What does Heterogenous mean?
Different
What is replacement?
When one element replaces another in a compound
What is "Fe" in the periodic table?
Iron
What is the evidence of a chemical reaction
Precipitate, Color Change, Gas Production
Where are neutrons and protons in an atom
In the nucleus
What is an example of a Colloid?
Whipped cream, mayonnaise, milk, butter, gelatin, jelly, muddy water, plaster, colored glass, and paper
What is a solute
The substance dissolved by the solvent
What is "Au" in the periodic table?
Gold
Which reaction absorbs heat? (endothermic or exothermic)
Endothermic
They are in the electron shell
What is a mixture
Two or more substances that are togther in the same place, but they are NOT chemically combined
What is the universal solvent?
Water
What compound is "CO2"
Carbon Dioxide
Which reaction releases heat? (endothermic or exothermic)
Exothermic
True or False
Are PROTONS and NEUTRONS equal?
No or False