Scientific Method
Data that is described with words, pictures, or colors is what kind of data?
Qualitative data
What should you NOT bring to the lab?
Food or Drinks
What are the three main forms of matter?
liquid, solid, gas
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, only converted from one form to another.
When a gas loses energy (or gains pressure) and moves to a liquid state, this is called what?
Condensation
The Control Variable is...
Variable that remains constant throughout the experiment, to keep the data accurate.
When during a lab would you need to put your hair up with a ponytail holder or rubber band?
When your hair goes below your ears
In physical / chemical changes in matter, the total mass of the ____ remains equal to the _____
product, reactant
What types of systems does the law of conservation of energy apply to?
isolated, closed
What is the Freezing point?
0C or 32F
How many steps are there in the Scientific Method?
5
What must you report immediately if this happens?
Accidents
Instead of vanishing when matter changes form, it is what?
Conserved
Total energy in a ______ system remains constant
isolated
A liquid’s change from gas to solid is called?
Deposition
Name the steps of the Scientific Method
Revised Hypothesis, Hypothesis, Experiment, Conclusion, Problem/Observations
List the 4 rules for getting dressed for a lab:
Goggles, closed toed shoes, not baggy clothes, and hair tie (if needed)
What is the Law of Conservation of matter?
The total mass of the products remains the same as the total mass of the reactants, OR Matter is not be created or destroyed
When kinetic energy runs out, what energy is left?
potential energy (also acceptable answer is “heat”)
A substance’s change from solid to gas
Sublimation
Put these Scientific Method Steps in order: Revised Hypothesis, Hypothesis, Experiment, Conclusion, Problem/Observations
Problem/Observations, Hypothesis, Experiment, Conclusion, Revised Hypothesis
What are the 3 things you must never do with chemicals?
Drink, touch w/out gloves, mix w/out permission, or smell (w/out wafting)
How is burning a piece of wood an example of the Law of Conservation of matter?
Burning the wood destroys the wood’s original form but the same amount of matter exists in the ashes–the matter never vanishes / isn’t completely destroyed
In a closed system, the total amount of energy can only be changed by _______
energy leaving the system, or new energy entering the system
A liquid’s resistance to flowing is called what?
Viscosity