States of Matter/Phase Change
List the 4 states of matter.
Solid, Liquid, Gas, Plasma
Heat transfer by direct touch is:
Conduction
A pure substance with only one type of atom is an: ________________ .
Element
Acids generally have a _____ taste.
Sour
To go from a solid to a liquid is called:
Melting
Convection is heat transfer through ________ or ________ .
Liquids or gases
More than one different element chemically compound is a: ________________
Compound
Cleaning supplies like soap and bleach are generally made of ___________.
Bases
Between solids, liquids, and gasses, which state has the most energy? (Moves the most?)
Gasses
A mixture
The pH scale goes from ____ to _______.
0-14
As temperature increases, the particles in a substance ______________ .
Speed up
or move faster
or move more.
Heat always wants to travel from a _______ place to a _____ place.
Hot to cool
Hotter to cooler
high heat to low heat.
Salad, pizza, and air are all examples of a:
Mixture
Base
What phase changes takes a solid immediately to a gas with no liquid phase?
Sublimation
If heat energy is leaving a reaction, it is an ________________ reaction.
Exothermic
Name 2 compounds (use their chemical formula, we've mentioned 4 several times in class).
C6H12O6
NaCl
H2O
CO2
(lots of other answers, above are the ones we've talked about in class).
Acids will turn blue litmus paper _____ .
Red