The Scientific Method
This step of the scientific method is where you make an educated guess about the outcome.
What is forming a hypothesis?
Matter exists in these three common states.
What are solid, liquid, and gas?
These three subatomic particles make up atoms.
What are protons, neutrons, and electrons?
These are the “building blocks” or monomers of proteins.
What are amino acids?
This term describes anything that takes up space and has mass.
What is matter?
In an experiment, this variable is the one you measure to see the effect.
What is the dependent variable?
In this state, particles vibrate but stay in fixed positions.
What is solid?
This number in an atom’s nucleus determines which element it is.
What is the atomic number (or number of protons)?
The main function of carbohydrates in living things.
What is providing energy (and energy storage)?
This is the term for a pure substance made of only one kind of atom.
What is an element?
Scientists repeat experiments many times to make sure their results are this.
What is reliable (or consistent/valid)?
These two changes of state happen when enough heat is added: solid → liquid and liquid → gas.
What are melting and vaporization (evaporation/boiling)?
This is the lightest element and the most abundant in the universe.
What is hydrogen?
Lipids form this special structure that makes up the boundary of all cells.
What is the phospholipid bilayer (cell membrane)?
This giant organism in Oregon covers 3.5 square miles and is made of genetically identical cells.
What is the honey fungus (Armillaria)?
A gardener plants 10 seeds in the sun and 10 seeds in the shade. What should they keep the same to make it a fair test?
What are the controlled variables (such as water, soil, type of seed)?
These invisible particles move so fast and far apart that they fill their entire container.
What are gas particles?
These six elements make up most of living things
Carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur
This complex carbohydrate helps plants build strong cell walls.
What is cellulose?
These are the four goals of life science.
What are food, energy, health, and environment?
This process describes how scientific knowledge changes as new evidence is found and old theories are replaced.
What is the Cycle of Scientific Enterprise (or scientific knowledge being provisional)?
This property makes water unusual compared to most substances when it freezes.
What is it expands and becomes less dense, so ice floats?
This number tells you how many protons are in the nucleus of an atom and determines the identity of the element.
What is the atomic number?
These are the two types of nucleic acids, which carry genetic information.
What are DNA and RNA?
Water has this property that allows insects to walk on its surface.
What is surface tension (caused by hydrogen bonding)?