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30 Cards in this Set

  • Front
  • Back
particle theory of matter
theory stating that all matter is
composed of very tiny objects called particles; that all particles
have spaces between them; that particles of matter are always
in motion; that particles in a substance attract each other
matter
anything that has mass and volume
2 different types of matter
- pure substances
- mixtures
element
pure substance that cannot be broken down into a
simpler substance
compound
pure substance made from two or more elements
that are combined together chemically
solution
- combination of pure substances in which the
different substances are not individually visible
- a homogeneous mixture
mechanical mixture
- combination of pure substances in which
the different substances are individually visible
- heterogeneous mixture
Ductility
Any solid that can be stretched into a long wire is said to be ductile
Colour and Lustre
the light a substance reflects gives it colour and lustre (shine)
conductivity
The ability of a substance to conduct electricity or heat.
Density
The amount of mass in a given volume of a substance
Hardness
A substance's ability to resist being scratched.
(Usually measured on the Mohs scale)
Malleability
A substance that can be pounded or rolled into sheets .
Viscosity
The resistance to flow
Cohesion
Sticks to itself
Adhesion
Sticks to other substances
Physical Property
Describes a characteristic of a substance that can be observed or measured.
(Melting point)
proton
- positively charged particle in an atom
- found in the nucleus
pure substance
- one kind of matter with a unique set of
properties, such as colour, hardness, boiling point, and melting point;
- an element or compound
atom
smallest part of an element that has all of the element’s
properties
molecule
group of atoms that share electrons; molecular
compounds contain molecules
molecular compound
pure substance that is formed when non-metals combine chemically
ion
atom or group of atoms that has lost or gained electrons
ionic compound
pure substance consisting of at least one metal and one non-metal
chemical property
- ability of a substance to change into a new substance or substances;
- e.g., how a substance interacts with other substances, such as acids, or how it reacts to heat or light
electron
- negatively charged particle in an atom; located
outside the nucleus of the atom
valence electron
electron in the valence shell of an atom
neutron
- particle that has no electric charge so is neutral;
- located in the nucleus of the atom
mixture
- a combination of pure substances
- substances in a mixture do not combine chemically like when a compound forms
alloy
A mixture of two or more metals
- e.g. white gold