Scientific Method
What is the 1st step of the Scientific Method?
Question
A _______________ is a substance that cannot be separated or broken down into simpler substances by chemical means
Element
True or False: A Cation is an ion with a positive charge
True
True or False: When working with chemicals, it is the best practice to smell the chemicals directly, rather than wafting them towards you
False
What angle should you keep a test tube away from you as it heats?
45 degrees
What is the 2nd step of the Scientific Method?
Research
What is classified as pure substances?
Elements and Compounds
We talked about three models of the Atom. Which of the following is the current model of the Atom?
Rutherford Model
When taking recently heated glassware, you should clean it in?
Warm Water
You do an experiment that produces 150 ounces of red candy. What kind of data would the 150 ounces be classified as?
Quantitative Data
What is the 3rd step of the Scientific Method?
Form a hypothesis
A ____________ is a substance made of atoms of two or more different elements that are chemically combined
Compound
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
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 is the 4th step of the Scientific Method?
experiment
A __________ is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance
Molecule
Which subatomic particle has a neutral charge?
Nuetron
True or False: When disposing of chemicals, it is proper procedure to pour all unused chemicals down the drain.
False
Water and sugar mixed together, dissolving and evenly distributing throughout, is an example of a ____________________ mixture
Homogenous
What is the 5th step of the Scientific Method?
Review the data
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
Matter is anything that has ____________ and takes up ________________
Mass; Space
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 minutes
Oil and water mixed together is an example of a ________________ mixture
Heterogenous