lab safety
True or False: When disposing of chemicals, it is proper procedure to pour all unused chemicals down the drain.
False
When substances doesn't mix uniformly and aren't evenly distributed they form a
Heterogenous Mixture
Which subatomic particle orbits the nucleus?
Proton
Electron
Nuetron
Atom
What does the P in PASS stand for, in regards to fire extinguishers?
Pull the pin
Press the handle
Pressurize the chamber
Peel the safety back
Data that refers to the characteristics of what we are observing is
Independent Data
Dependent Data
Qualitative Date
Quantitative Data
Brayden really loves science class. Like he really, really loves science class. Unfortunately, Brayden was busy making animal noises while Mr. Grim was giving instructions for the upcoming lab. Brayden ended up getting a chemical burn on his hand. What practice would have best helped Brayden avoid this situation?
All of the above
Wearing appropriate protective gear
Listening to the full instructions of the lab
Making sure to be careful when mixing together different chemicals
Water and sugar mixed together, dissolving and evenly distributing throughout, is an example of a ____________________ mixture
Homogenous
What is an ion, as per our notes?
At atom that does not carry an electrical charge
An atom that carries an electrical charge
An atom that has gained neutrons
An atom that has gained protons
What are the two protective items required each time you enter a lab area
Eye Protection and a Solid Water Bottle
Paper and Pencil
Eye Protection and Long Sleeves
Eye Protection and Gloves
Data that refers to the numerical values of what we are observing is
Independent Data
Dependent Data
Qualitative Date
Quantitative Data
When is it ok to take off your protective gear and to leave the lab area (make sure your answer is the most correct, there are multiple correct answers)?
Once you have cleaned up your experiment area
A __________________ is different from the elements that it is composed of, but a ____________________ may have properties similar to the pure substances that form it.
Compound, Mixture
Which subatomic particle has a neutral charge?
Proton
Electron
Nuetron
Atom
How long should you cleanse out your eyes after getting chemicals splashed up into them?
2 minutes
10 minutes
20 minutes
30 minutes
A variable that stay the same regardless of what else you are changing is a __________ variable.
Dependent
Independent
Controlled
False
Which situation would the power shower come in handy?
A piece of clothing has caught on fire
A _______________ is a substance that cannot be separated or broken down into simpler substances by chemical means
element
A _________ is the smallest whole particle of matter
Subatomic Particle
Atom
Proton
Electron
What angle should you keep a test tube away from you as it heats?
0 degrees
45 degrees
90 degrees
180 degrees
Quade enters a candy eating competition. In the competition he eats 150 ounces of candy. What kind of data would the color red be classified as?
Independent Data
Dependent Data
Qualitative Data
Quantitative Data
When taking recently heated glassware, you should clean it in
Warm water
A __________ is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance
molecule
Two atoms with different numbers of neutrons, but the same number of protons are called ___________?
Isotopes
Atoms
Ions
Atomic Mass
True or False: When working with chemicals, it is the best practice to smell the chemicals directly, rather than wafting them towards you
True
False
A variable that is changed by you in the experiment, meaning this is what you are changing each time you do a trial, is a _____________ variable.
Dependent
Independent
Controlled
False