Scientific Method
The step where you use your senses to gather information.
What is observation?
These must always be worn when chemicals, heat, or glassware are used
What are safety goggles?
The number of protons in an atom is called this
What is the atomic number
Substances that have only one type of atom or molecule
What are pure substances
AB + C → AC + B describes this reaction type
What is single replacement
This is an educated guess that explains a possible answer to a scientific question.
What is a hypothesis?
The only time goggles may be removed is during this safe activity
What is simple cleaning/glassware washing?
This subatomic particle has no charge
What is the neutron
Electrons are shared between atoms in this type of bond.
What is covalent bonding
Two substances combine to form one product: A + B → AB
What is synthesis (combination)
Making deliberate changes to test an idea happens in this step
What is experimenting?
Long hair, loose clothing, and dangling jewelry should be secured near this equipment
What is a burner/open flame
These negatively charged particles move outside the nucleus
What are electrons
These positive ions form by losing electrons
What are cations
AB → A + B is the pattern for this reaction type
What is decomposition
The variable that is observed or measured to determine the resul
What is the dependent variable?
This part of the science room is used to rinse chemicals from eyes or skin
What is the emergency shower/eyewash station
Solid, liquid, gas, and plasma are examples of these
What are states of matter
Ionic compounds typically dissolve in this solvent and conduct electricity.
What is water (aqueous solution)
In this reaction, an acid and base form salt and water
What is acid-base reaction
A well-tested explanation for why events occur in the natural world
What is a scientific theory?
You should do this first if a spill, injury, or broken glass occurs
What is notify the teacher
Same element, different numbers of neutrons describes these
What are isotopes
Electrons are transferred, not shared, in this type of bond
What is ionic bonding
A reaction involving electron transfer, like burning fuel in oxygen
What is a redox reaction