Show:
Properties of Water
Safety
Density
Lab Equipment
garble-de-gunk
100
Which is NOT a property of water? a. clear b. wet c. odorless d. tasteless
What is b. wet
100
What safety rule is associated with the the lab station in which you added HCl to nylon?
What is DON'T SIT ON THE COUNTER TOPS!!
100
D=M/V
What is the formula for calculating density
100
Test tubes are used for _______
What is to produce reactions and hold substances *BONUS* What do you put the test tubes in/on to free your hands?
100
Which is the least dense? Water, Oil, Alcohol
Alcohol *BONUS* the most dense?
200
The melting point of water is ______ degrees Celsius
What is 0
200
What do you do when you come across a clear liquid that appears to be water but is not labeled?
What is YOU TREAT IT AS IF IT WERE HARMFUL and of course - ASK THE TEACHER!!
200
the "M" in the formula stands for ______
What is Mass *BONUS* what units do we use to represent mass?
200
What do you use to measure volume?
What is a Graduated Cylinder *BONUS* How do you accurately read a graduated cylinder?
200
If you are given a data table comparing volume and mass, would you draw a line graph or a bar graph?
What is bar graph *BONUS* When would you use a line graph?
300
The boiling point of water in CASPER is _____ degrees Celcius
What is 96-97 *BONUS* What is the boiling point of water at sea level?
300
What is the procedure for when something gets broken?
What is TELL THE TEACHER, sweep it up with the broom/dust pan, throw all glass in the box-NEVER pick up glass with your hands
300
the "V" stands for volume- what units do we use to represent volume?
What is mL *BONUS* What equipment do we use to measure volume?
300
What do you use to measure mass?
What is a Scale *BONUS* If asked to "tare" the scale, what does that mean?
300
To purify water, what 2 techniques did you use?
What is Filtration and Distillation *BONUS* if you needed to draw and label the apparatus we used for the lab, would you know what to do??
400
The density of fresh water is ____ g/mL
What is 1 g/mL *BONUS* what is the density of salt water?
400
Which part of the flame is the hottest?
What is the top of the cone in the center of a blue/purple flame
400
calculate the density of 19 mL of a solution that has a mass of 20g
What is 1.05g/mL
400
You use this to perform chemical reactions, hold substances but is not a very accurate tool to measure
What is a Beaker
400
Which is more dense: Salt water or Fresh Water?
What is Salt water *BONUS* describe what the molecules look like in salt water vs. fresh water
500
Describe what water molecules look like during the 3 phases of matter (solid, liquid, gas)
What is Solid: molecules packed close together and are connected vibrating in place. Liquid: Molecules are moving slowly and freely passing by each other. Gas: Molecules are moving at a rapid rate bouncing off one another and are far apart
500
What do always do when you first get into the lab?
What is put on safety glasses!! *BONUS* when is it ok to not wear safety glasses?
500
calculate the density of a solid that has a mass of 42g and 92mL.
What is 0.46 *BONUS* what is missing in the answer??
500
The __________ is what you clamp the thermometer to next to the hot plate to measure the temperature of the substance in the beaker.
Ring Stand *BONUS* the "beaker" that has a narrow neck is not a beaker-it's called a __________________.
500
ppm stands for ____________. ppb stands for __________.
What is Parts per Million, Parts per Billion