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states of matter:
Liquid, gas, solid
what is the relationship between Volume of gas and heat?
The volume expands as heat increases
a solution or mixture composed of 2 or more substances that is the same throughout.
a homologous mixture
define pure substance
matter that is homogeneous with a definite/fixed composition or chemical formula, and cannot be separated (homogenous mixture can be separated).
It is formed from a compound or element
mL, L, cm^3 relationship
conversion formula for C to K
F to C formula
Density formula, M formula, D formula
What is density and temp's relationship
Density is dependent on temperature
what is the smallest particle of an element that can exist
most abundant element on earth
list characters of metals
- -metalic-conduct heat and electricity
- -high density
- -high melting point
list characters of nonmetals
- -dull (if solid)
- -poor conduction
- -non ductule
- -low density
- -low melting point
what are liquid elements at room temp?
bromine and mercury
7 diatomic elements
- I have never found clubs on board: I, H, N, F, Cl, O, Br
- (F,Cl, Br,I are all halogens)
Metal and non-metal usually make a___ compound
2 nonmetals usually make a ____ compound
what charge do metals and nonmetals have
- metals=cation +
- nonmetals=anion -
which of the following observation is not a chemical change
A)converting H to water (H2O)
B) converting ion to steel (steel is an alloy of iron).
C) converting coal (coal is a form of carbon) to carbon dioxide
D) converting sulfur to acid rain (acid rain contains H2SO4)
B), because alloys are not only mixtures of 2 metals, and do not undergo chemical change.
(this multiple choice question has been scrambled)
What is the law of conservation of mass:
Energy can not be created or destroyed, it simply transforms, so the mass of the reactant= the mass of the product.