Crazy Chemistry
Change in size
What is a physical change?
You can tell the difference by smelling and seeing things
What is appearance and odor?
Anything that has mass and volume
What is matter?
A substance has definite shape and definite volume
What is a solid?
Give an example of a solid
Glass is a solid
When matter changes into an entirely different matter
What is a chemical change?
The ability of a substance to allow heat to flow through it.
What is conductivity?
The smallest chemical unit of an element
A substance has definite volume
What is liquid?
Give an example of a liquid
Water is a liquid
Ability of matter to burn in the presence of oxygen
What is flammability?
A physical property that helps determine how a substance might be used (i.e. scratch test)
What is hardness?
A pure substance that cannot be broken down into simpler substances and contains one type of atom
What is an element?
A substance has neither a definite shape nor a definite volume
What is gas?
Give an example of a chemical change
Rusting of iron, souring milk, cooking an egg, burning wood, digesting food, etc.
Ability of matter to combine chemically with other substances to form new substances
What is reactivity?
Physical property of a liquid that resists flowing
What is viscosity?
The smallest of a chemical compound, composed of two or more atoms bonded together.
What is a molecule?
The ratio of a substance's mass to its volume
Mass/Volume
Density
Give an example of a physical change
Melting an ice cube, boiling water, shredding paper, chopping wood. etc.
A material that is both malleable and conducts electricity.
What are metals?
Each substance has a unique temperature
What are melting and boiling points?
A homogeneous mixture made by dissolving one substance in another
What is a solution?
The energy an object has due to its motion
Kinetic Energy
What is the difference between a compound and an element?
A compound can be broken down into simpler substances. An element cannot.