States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
I need help describing if its a mixture or pure substance I did the other 4 but not sure about the two I boxed
![Matter Is Made of C.P's
→ With Fixed Parts Atoms
Matter Can Be Pure Substance or a Mixture
composition!
substance
a substance: separates by physical means?
mixture
pure substance no
yes
can physical means
pure substance : 1 c.p. repeated no
same one C.p.
22 different c.p's
• Chemically homogeneous: made of N x [the 1 c.p.]
Composition & properties are "constant"-in physical
separation "definite" and independent of the source.
separate it to 22?
repeated
repeated
defines PS
phys: un/mix wintact c.p's
in nature
whole atoms
chemical mixture : 22 c.p's repeated yes
• Chemically heterogeneous: Nx x [C.p. X] + Ny x [c.p. Y] + ...
The 22 pure substances (X, Y, ...) are combined physically: with
their c.p's intact in the mixture, and in a range of proportions.
Composition and properties are "variable"-in physical purification
→"non-definite" and dependent on the source.
chem: un/bolt
into new c.p's
...
hmg!
we see:/N x
oxygen
%3D
nitrogen
yes!
compound
22 different atoms
make the repeat c.p.
FYI: A sample of any
substance always has a
definite composition
and properties.
element
Eno
air
pure substance:
can chemical means
same atoms
water
make the repeat c.p.
sea
separate it to 22?
- Only some elements form compounds & only in fixed proportions!
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