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 different drinks be classified as?
independent
When taking recently heated glassware, you should clean it in
warm water
When substances doesn't mix uniformly and aren't evenly distributed they form a _______________________
heterogeneous
What is an ion, as per our notes?*
an atom that has gained protons
A _________ is the smallest whole particle of matter*
atom
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: When working with chemicals, it is the best practice to smell the chemicals directly, rather than wafting them towards you
false
Carbon (C) is an example of a ________________?
element
We talked about three models of the Atom. Which of the following is the current model of the Atom?
election cloud model
A variable that stay the same regardless of what else you are changing is a __________ variable.
controlled
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?
qualitative data
True or False: When disposing of chemicals, it is proper procedure to pour all unused chemicals down the drain.
false
Look at the following: FeCl₃ . How many atoms are present for each of the elements listed?
fe 1 c1 3
The atomic mass is made up of combining which two subatomic particles?
protons and neutrons
A ____________ is a substance made of atoms of two or more different elements that are chemically combined
coumpund
Data that refers to the characteristics of what we are observing is
qualitative data
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 min
A _______________ is a substance that cannot be separated or broken down into simpler substances by chemical means
element
Matter is anything that has ____________ and takes up ________________
mass and space
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
the order of the scientific method is
What angle should you keep a test tube away from you as it heats?*
45
Which of the following would be classified as pure substances?*
element and compounds
Two atoms with different numbers of neutrons, but the same number of protons are called ___________?
isotopes
Which subatomic particle orbits the nucleus?*
electrons