Scientific Method
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
We talked about three models of the Atom. Which of the following is the current model of the Atom?
Electron Cloud Model
You do an experiment that produces 150 ounces of red candy. What kind of data would the 150 ounces be classified as?
Quantitative Data
When substances are evenly distributed and the mixture is the same throughout they form a _______________________
Homogenous Mixture
When is it ok to take off your protective gear and to leave the lab area
Once you have cleaned up your experiment area
Data that refers to the characteristics of what we are observing is
Qualitative Date
What is an ion, as per our notes?
An atom that carries an electrical charge
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 minutes
A __________ is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance
Molecule
What angle should you keep a test tube away from you as it heats?
45 degrees
A variable that stay the same regardless of what else you are changing is a __________ variable.
Controlled
Which subatomic particle do we use in order to make the atomic number (The atomic number equals the number of this particle)?
Proton
The atomic mass is made up of combining which two subatomic particles?
Protons & Neutrons
Carbon (C) is an example of a ________________?
Element
When taking recently heated glassware, you should clean it in
Warm water
Data that refers to the numerical values of what we are observing is:
Quantitative Data
Two atoms with different numbers of neutrons, but the same number of protons are called ___________?
Isotopes
Oil and water mixed together is an example of a ________________ mixture
Heterogenous
A pure substance is matter that has fixed composition and definite properties. Is apple juice a pure substance?
No
When disposing of chemicals, it is proper procedure to pour all unused chemicals down the drain.
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.
Independent
True or False: A Cation is an ion with a positive charge.*
True
Matter is anything that has ____________ and takes up ________________
Mass; Space
A ____________ is a substance made of atoms of two or more different elements that are chemically combined
Compound
What does the P in PASS stand for, in regards to fire extinguishers?*
pull the pin