Lab safety quiz
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 Minutes
True or False: A Cation is an ion with a positive charge.
True
A __________ is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance.
Molecule
A variable that will be changed by the variable you change, meaning this is you are measuring the change of, is a _____________ variable.
Dependent
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
What angle should you keep a test tube away from you as it heats?
45 Degrees
The atomic mass is made up of combining which two subatomic particles?
Protons and Neutrons.
Which of the following would be classified as pure substances?
Elements and compounds
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
Which situation would the power shower come in handy?
Which subatomic particle orbits the nucleus?
The electron
Oil and water mixed together is an example of a ________________ mixture.
Heterogeneous
Data that refers to the characteristics of what we are observing is.
Qualitative data.
Which subatomic particle do we use in order to make the atomic number (The atomic number equals the number of this particle)?
Proton
What does the P in PASS stand for, in regards to fire extinguishers?
Pull the pin
Matter is anything that has ____________ and takes up ________________.
Mass, Space
A _______________ is a substance that cannot be separated or broken down into simpler substances by chemical means.
Element
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.
Two atoms with different numbers of neutrons, but the same number of protons are called ___________?
Isotopes
When taking recently heated glassware, you should clean it in?
We talked about three models of the Atom. Which of the following is the current model of the Atom?
Electron Cloud Model.
True or False: When elements combine to make a specific compound, they always combine in the same proportions (Example: Water can only be formed as H20, you cannot add extra elements and it still be water).
True
You do an experiment that produces 150 ounces of red candy. What kind of data would the 150 ounces be classified as?
Quantitative data.
A _______________ is a substance that cannot be separated or broken down into simpler substances by chemical means
Element