Vocab
What is the category of elements called that have properties somewhere between metals and nonmetals?
What is a metalloid?
What is a row called on the periodic table?
What is a period?
Bubbles are an example of this indicator:
What is gas formation?
What is the name for a chemical you start with in a chemical reaction?
What is a reactant?
Balance this equation:
___ H2O2 --> ___ H2O + ___ O2
What is 2, 2, 1?
DAILY DOUBLE: What state is an electron in when it absorbs energy?
What is the excited state?
What are the two names for a column on the periodic table?
What is a group or family?
What is one of the easiest indicators to detect with your eyes?
What is a color change?
What is the big number in a chemical equation that describes the number of molecules?
What is a coefficient?
Name a physical property of a marshmallow.
Name a chemical property of a marshmallow.
How do these properties determine what we use marshmallows for?
Physical: low melting point, small mass, white
Chemical: flammable, non-toxic, high in energy
These help us cook and eat the marshmallow until it's melted, a little crispy, and delicious!
What is an action that you (the scientist) can do to speed up a reaction?
What is agitation?
What is Ms. Tung's favorite element?
What is Tungsten (W)?
DAILY DOUBLE: What is an indicator of a chemical reaction that cannot be seen or felt?
What is an odor?
What is the small number in a chemical equation that describes the number of atoms in a molecule?
What is a subscript?
Who is the scientist who discovered two radioactive elements?
What was the first radioactive element named after its properties?
What was the second radioactive element named after the scientist's home country?
Who is Marie Curie?
What is Radium?
What is Polonium?
What is the substance being dissolved called? (eg. sugar in sugar water)
What is a solute?
What evidence of a chemical reaction did you see in the luminol reaction?
What is light production?
What number do you change to balance a chemical equation?
What is a coefficient (again)?
Everyone grab a whiteboard!
Which element has 30 neutrons?
(Hint: the number of neutrons increases as you get further down the table!)
What is Iron (Fe)?
What is the difference between an intensive and extensive physical property?
Extensive depends on the amount of substance, intensive does not depend on the amount of substance.
During a chemical reaction, a solid appears from two liquids. What is it called?
What is a precipitate?
What is the scientific principal behind why chemical equations must be balanced?
What is the Law of Conservation of Mass?