Setting up an experiment
The part of the experiment that has an "if" and "then"
What is the hypothesis?
This part of the experiment is changed by the experimenter.
What is the independent variable?
This changes the form of the material but not the chemical composition.
What is a physical change?
The positive particle in an atom
What is a proton?
The axis where you place the independent variable
What is the X-axis?
Using seeds, soil, and different types of water
HINT: hypothesis, observation, experiment or conclusion
What is an experiment?
An experimenter changes the salt concentration of water that is being used on plants. This is an example of what variable.
What is the independent variable?
A nail rusts
What is a chemical reaction?
The number of protons
What is the atomic number?
An atom has 12 protons and an atomic weight of 24. This is the number of neutrons.
What is 12 neutrons?
The data showed that cats like to eat carrots.
HINT: hypothesis, observation, experiment or conclusion
What is the conclusion?
This part of the experiment will respond to the chemical being tested.
What is the dependent variable?
An ice cube melts
What is a physical change?
This part of the atom that has no charge
What is a neutron?
The axis where you put the dependent variable
What is the Y axis?
Doc was surpised when she saw plants growing without soil.
HINT: hypothesis, observation, experiment or conclusion
What is an observation?
This part of the experiment is used for comparison.
What is the control?
Sugar dissolves in water
What is a physical reaction?
The charge of an electron
What is negative?
Ice melts into water and then turns into water vapor
What are two different physical reactions?
Doc used a survey to see how many students liked pizza.
HINT: hypothesis, observation, experiment or conclusion
What is the experiment?
These parts of the experiment stay the same in every test.
What are the constants?
An apple is cut into pieces and turns brown after it sits around
What is a physical followed by a chemical reaction?
The number of electrons in the first shell around the nucleus
What is two electrons?
The charge of an atom where the number of electrons equals the number of protons
What is no charge?