Monday
What are tge 3 states of matter?
Solid, liquid, gas
What happens when something dissolves?
it mixes evenly with the fluid
If a reaction gives off heat, what is it called?
exothermic
acidic things have a low or high pH number value?
low pH number (less than 7)
what TOOL do chemists use to measure out small/precise amounts of a liquid
pipette
What is the gas form of water?
water vapor
Why don’t oil and water mix?
oil is non polar and water is polar!
What is the product of baking soda + vinegar? (Gas)
CO2
What is density?
how heavy liquids are
What is dry ice?
solid CO2
What does heat do to a reaction? Be specific
speed it up
What process describes the separation of ink? Used for your LED Flowers/flags
chromatography
What are signs of a chemical reaction, name 2
In the fruit punch demo activity, happened when I mixed the acid and base solution together?
turned clear (neutralized)
Why did our dry ice bottles explode?
pressure expanded while the container doesn’t expand
What state of matter has the most energy (particles moving the fastest)
gas
What is a solute and solvent?
solute - what gets dissolved (ex. Sugar)
solvent - what does the dissolving (ex. Water)
What process describes pennies reacting with oxygen and forming copper oxide?
oxidation
what are the 2 parts of a chemical reaction?
X. -> Y
What is the bottom measurement on a graduated cylinder called?
miniscus
What are all the phases of the water cycle (4)
melting, evaporation, condensation, precipitation
What word describes the phenomenon associated with alka seltzer tablets (the “fizzing” you saw in the lava lamp)
effervescence
What is UV? Not just what it stands for
UV Light Is Part of Sunlight
Does food coloring mix with oil or water? Why?
water because of polarity and density
What is sublimation?
dry ice goes from solid -> gas without becoming a liquid first