Lesson 1
Chemistry and Physics are the study of what two things?
Matter and Energy
What do you call unusual liquids (like a cornstarch and water mixture) which become solid when pressure is put on them?
Amorphous solids or non-Newtonian liquid
Ooblek
A negatively charged particle in an atom is called a what?
Electron
Substance which speeds up a chemical reaction without being used up in the process
Catalyst
A homogeneous mixture made up of one substance that is dissolved into another is called a what?
A solution
Matter is anything that has what two things?
Mass and Volume
What do we call it when a gas becomes a liquid, as when raindrops are formed from water gases in the atmosphere?
Condensation Point
Smallest particle of an element that still keeps the properties of that element?
Atom
In a chemical reaction the substance you start with is called what?
Something that dissolves a substance is called a what?
Solvent
To replace matter with another kind of matter is called what?
Displacement
The temperature that makes a liquid turn into a solid is called its what?
Freezing Point
Center of the atom which contains the protons and neutrons is called the what?
Nucleus
Change which does not transform the molecules, but only the way things look or perhaps the state of the chemical substance is called what?
A physical reaction
When a solution has reached the point where no more solute can dissolve in the solvent it is what?
Saturated
The ability of something to float is called what?
Buoyancy
Newton's law of what says that liquids flow more readily when heated?
Viscosity
Molecule which contains at least two different elements combined is called what?
A compound
What are the 4 C's of diamonds?
Cut, Clarity, Carat, and Color
What is Newton's First Law of Motion?
Something at rest prefers to remain at rest unless something forces it to move and something in motion prefers to remain in motion unless something forces it to stop moving.
Why is mass not always measured by weight?
Mass stays the same, but weight can vary, depending on whether you are on earth, in space, or on some other planet.
As the molecules on the surface of the water stick together they form an invisible "skin" called what?
Surface Tension
Gases such as argon which are stable and nonreactive are called what?
Noble gases
What does the term "pH" stand for?
Potential for Hydrogen
A change in speed and direction is called what?
Acceleration