Module 1:
Scientific Method
Scientific Method
Any factor that changes in experiment
What is a variable?
Anything that has mass and takes up space
What is matter?
This man was the first to argue matter made of indivisible particles
Who was Democritus?
Substances that undergo chemical change
What are reactants?
Tentative explanation for an observation
What is a hypothesis?
Pure substance of only one kind of atom
What is an element?
Number of protons in an atom
What is the atomic number?
Force of attraction between atoms
What is a chemical bond?
Observations made using 5 senses
What is qualitative observation?
Ratio of mass to volume
What is density?
(Daily Double): Discovered dense, positive nucleus
Who was Rutherford?
Atom or group with a charge
What is an ion?
Conclusions based on observations, prior knowledge, and available information
What is inference?
Smallest unit of a compound made of bonded atoms
What is a molecule?
Negatively charged subatomic particle
What is an electron?
Notation showing elements and ratios
What is a chemical formula?
(Daily Double): Investigation where only one factor is changed
What is a controlled experiment?
Movement of particles in gases and liquids
What is diffusion?
Matter cannot be created or destroyed
What is the Law of Conservation of Mass?
Bond formed between oppositely charged ions
What is an ionic bond?