Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
Physical state
|
The condition of matter existing as a solid, liquid, gas
|
|
|
Sublimation
|
a direct change of state from a solid to a gas
|
|
|
Deposition
|
a direct change from gas to a solid
|
|
|
Heterogeneous mixture
|
matter having an indefinite compostion
|
|
|
Homogeneous mixture
|
matter having a definite composition, but variable properties from sample to sample; for example alloys and solutions
|
|
|
Substance
|
matter having a definite composition and constant properties EX: element or compound
|
|
|
Alloy
|
a homogeneous mixture of two or more metals
|
|
|
Compound
|
a substance that can be broken down into simpler substances
|
|
|
Element
|
a substance that cannot be broken down by chemical reaction.
|
|
|
Atom
|
the smallest particle that represents an element
|
|
|
Chemical symbol
|
an abbreviation for the name of a chemical element.
|
|
|
Metal
|
an element that is generally shiny in appearance, has a high density, high melting point and is good conductor of heat and electricity
|
|
|
Malleable
|
the property of a metal that allows it to be machined into foil
|
|
|
Ductile
|
the property of a metal that allows it to be drawn into wire
|
|
|
Nonmetal
|
an element that is generally dull in appearance, has low density, low melting point and is not a good conductor of heat and electricity.
|
|
|
Semimetal
|
an element that is generally metallic in appearance and has properties midway between those of a metal and a nonmetal
|
|
|
Atomic number
|
a number that identifies a particular element.
|
|
|
Periodic table
|
a chart that arranges elements according to their properties.
|
|
|
Law of definite composition
|
the principle that a compound always contains the same mass ratio of elements.
|
|
|
Molecule
|
a single particle composed of two or more nonmetal atoms .
|
|
|
Chemical formula
|
an abbreviation for the name of a chemical compound that indicates the number of atoms of each element.
|
|
|
Physical property
|
a property that can be observed without changing the chemical formula of a substance.
|
|
|
chemical property
|
a property that cannot be observed without changing the chemical formula of a substance.
|
|
|
Chemical change
|
a modification of a substance that alters the chemical composition. |
|
|
Physical change
|
a modification of a substance that does not alter the chemical composition.
|
|
|
Potential energy
|
the stored energy that matter possesses owing to its position or composition.
|
|
|
Kinetic energy
|
the energy associated with the mass and velocity of a particle.
|
|
|
Law of conservation of mass
|
the law that states mass cannot be created or destroyed.
|
|
|
Law of conservation of energy
|
the law that states energy cannot be created or destroyed.
|
|
|
Law of conservation of mass and energy
|
the law that states the total mass and energy in the universe is constant.
|
