Lab safty quiz
What does the P in PASS stand for, in regards to fire extinguishers?*
pull the pin
A variable that will be changed by the variable you change, meaning this is you are measuring the change of, is a _____________ variable.
Dependent
Which subatomic particle do we use in order to make the atomic number (The atomic number equals the number of this particle)?
Proton
A __________________ is different from the elements that it is composed of, but a ____________________ may have properties similar to the pure substances that form it.
Atom,Element
What are the two protective items required each time you enter a lab area?
Eye protection and gloves
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 expeirment area
Data that refers to the numerical values of what we are observing is:*
Quantitative Data
A _________ is the smallest whole particle of matter*
Atom
Water and sugar mixed together, dissolving and evenly distributing throughout, is an example of a ____________________ mixture
Homogenous
Which subatomic particle has a neutral charge?*
Neutron
When taking recently heated glassware, you should clean it in:*
Warm water
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.
Independent
What is an ion, as per our notes?*
An atom that carries an electrical charge
A ________________ is a combination of chemical symbols and numbers to represent a substance. It shows how many atoms of each element are in a unit of a substance.
Chemical Formula
The atomic mass is made up of combining which two subatomic particles?
Protons and Netrons
Which situation would the power shower come in handy?*
A pice of clothing has caught on fire
Cole is testing to see if what he drinks before running effects his finish time. He tests it with water, juice, milk and carrot juice. He wears the same clothes and shoes regardless. What variable would the different drinks be classified as?
Independent
Two atoms with different numbers of neutrons, but the same number of protons are called ___________?
Isotopes
When substances doesn't mix uniformly and aren't evenly distributed they form a _______________________
Heterogenous mixture
Matter is anything that has ____________ and takes up ________________
Mass and space
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 mins
Cole is testing to see if what he drinks before running effects his finish time. He tests it with water, juice, milk and carrot juice. He wears the same clothes and shoes regardless. What variable would the running finish time be classified as?
Dependent
True or False: A Cation is an ion with a positive charge.*
True
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?*
An atom that carries an electrical charge