Scientific Method Quiz
Data that refers to the characteristics of what we are observing is:
Qualitative Date
What angle should you keep a test tube away from you as it heats?
45 degrees
What is an ion, as per our notes?
An atom that carries an electrical charge
When substances doesn't mix uniformly and aren't evenly distributed they form a _______________________
Heterogeneous Mixture
True or False: A Cation is an ion with a positive charge.
True
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
When taking recently heated glassware, you should clean it in:
Warm water
We talked about three models of the Atom. Which of the following is the current model of the Atom?
Electron Cloud Model
A ____________ is a substance made of atoms of two or more different elements that are chemically combined
Compound
Data that refers to the numerical values of what we are observing is:
Quantitative Data
Identify the six steps of the scientific method, in order:
Question-Research-Hypothesis
Experiment-Review-Share/Compare
What does PASS stand for, in regards to fire extinguishers?
P-Pin A-Aim S-Squeeze S-Sweep
The atomic mass is made up of combining which two subatomic particles?
Protons & Neutrons
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
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
A variable that will be changed by the variable you change, meaning this is you are measuring the change of, is a _____________ variable.
Dependent
When is it ok to take off your protective gear and to leave the lab area?
Once you have cleaned up your experiment area
Two atoms with different numbers of neutrons, but the same number of protons are called ___________?
Isotopes
When substances are evenly distributed and the mixture is the same throughout they form a _______________________
Homogeneous Mixture
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 minutes
A variable that stay the same regardless of what else you are changing is a __________ variable.
Controlled
True or False: When disposing of chemicals, it is proper procedure to pour all unused chemicals down the drain.
False
Which subatomic particle orbits the nucleus?
Electron
True or False: When elements combine to make a specific compound, they always combine in the same proportions?
True
Matter is anything that has ____________ and takes up ________________
Mass; Space