Chemical or physical change?
Cutting paper.
Physical change.
Formula for density?
Density = Mass/Volume
True or false? General properties of matter include: mass & volume (therefore density).
True
True or false? Matter is anything that has mass & volume.
True
Name at least 5 properties we identified for items/substances in chemistry.
Color, size, shape, odor, mass, volume, density, phase (solid, liquid, or gas), viscosity, flammability, solubility, etc.
Burning paper.
Chemical change.
These are the building blocks of all matter.
Atoms
Vibranium has more mass/volume than H2O; will it float or sink in H2O?
Sink!
If something of the same volume has more mass, is it more or less dense than the item with the same volume but that has less mass?
More dense, "denser" ok, too!!
What piece of lab equipment do we use to measure liquid (precisely)?
A Graduated Cylinder!
Symbol for change in our notes? Bonus (also worth 300 points): what greek letter is associated with the symbol/shape?
Triangle; Delta
Formula for Volume (with respect to mass & density)?
Volume = Mass/Density
Read this part or curved line on the graduated cylinder when assessing fluid volume.
The meniscus
You could report the volume of a solid using these units.
cm3, cc, cubic centimeters, in3, cubic ft, etc.
Pennies used to be made out of mostly this_______; now they are made mostly of this______.
Copper; Zinc
True or false? Cracking an egg, & frying it are both physical changes?
False - cracking is physical; frying is chemical
Multiple atoms together make up a ___________.
Molecule
You could report the volume of a fluid with these units.
liters, mL, cc, cm3
What is the best way to classify the material Oobleck?!
Definite volume, but no definite shape = liquid, or non-Newtonian
What was it called when we separated the colors within the markers using coffee filter paper?
(paper) Chromatography
True or false? Burning a candle results in both chemical and physical changes?
True!
The 3 sub-atomic particles we have focused on?
Electrons, neutrons, & protons
Describe where the 3 sub-atomic particles (that we focused on) are found, & what type of charge +/- they have.
Neutrons = no charge & in nucleus; protons = + charge & in nucleus; electrons = - charge & surround the nucleus (in shells/orbitals)
Helium is light & makes your voice high-pitched. What substance/gas (that we discussed) is heavy & makes your voice low-pitched?
Sulfur hexafluoride (SF6)
Our multiple-beam (quadruple) balance could accurately (when calibrated) measure up to this many grams.
311 - the band that made Ebnet get his hearing checked after a loud concert at the Target Center.