When you use your senses to see the world around you.
What is an observation
100
This is an educated guess.
What is a hypothesis
100
This is the number of protons in an atom.
What is an atomic number
100
These properties include density, mass, texture, and smell
What are physical properties
100
These are the substances before a chemical reaction
What is reactants
200
When you use your brain to figure out your observations
What is an inference.
200
How does adding paper clips affect the falling rate of a helicopter? This is an example of a...
What is a testable question.
200
This is the number of Protons and Neutrons in an element.
What is the atomic mass
200
These are changes in a substance's appearance, but it still remains the same substance.
What is a physical change
200
These are substances after a chemical reaction
What are products?
300
This determines how much space and object takes up.
What is volume
300
This variable is what we change in the experiment. It is also the cause.
What is an independent variable.
300
This particle has a negative charge and orbits around the nucleus
What is an electron
300
This is when a new substance is created
What is a chemical change.
300
This law states that the mass of the reactants and the mass of the products stays the same.
What is the Law of the Conservation of Mass?
400
This is how much "stuff" a substance is has.
What is mass.
400
This is the effect of my independent variable.
What is a dependent variable.
400
I find the number of these particles by subtracting the atomic mass from the atomic number.
Example: Atomic mass =12, atomic number = 6, I am left with 6 what?
What are neutrons
400
This is the ability for atoms of different elements to create new substances.
What are chemical properties
400
If I have a powdered salt and a big brick of salt, which is going to dissolve faster?
What is the powdered salt
500
This is a type of observation in which we look at the numbers.
What is quantitative observation.
500
This variable is unchanged in our experiment.
What is a control variable
500
This is the simplest substance. The periodic table organizes these substances.
What is an element
500
If ice melts into water. What type of change is this?
What is a physical change.
500
This is the amount of area that a substance has to react with other substances. Powders have more of this than rocks.