Matter: Physical and Chemical Changes Explained
VOCABULARY – ADVANCED CLASS
Matter
Unit 1.3
Week of August 22, 2016
You will need 4 index cards
S8P1. Students will examine the scientific view of the
nature of matter.
e. Distinguish between changes in matter as physical
(i.e., physical change) or chemical (development of a
gas, formation of precipitate, and change in color).
•
eactivity, combustability, precipitate, oxidation) chemical change, physical change, sublimation,
PHYSICAL CHANGES
•
A material may change shapes
or forms while undergoing a
physical change, but no
chemical reactions occur and
no new compounds are
produced.
•
the identity of the matter does
not change.
•
Easier or possible to change
back.
•
Examples:
•
crumpling a sheet of
aluminum foil
•
melting an ice cube
•
casting silver in a mold
•
breaking a bottle
•
https://www.youtube.com/watch?v=BgM3e8YZxuc
CHEMICAL CHANGE
•
A Material changes and
produces a new substance.
•
A new compound (product)
results from a chemical change
as the atoms rearrange
themselves to form new
chemical bonds.
•
Difficult or impossible to
reverse.
•
Examples:
•
burning wood
•
souring milk
•
mixing acid and base
•
digesting food
•
cooking an egg
•
heating sugar to form
caramel
•
baking a cake
•
rusting of iron
CRASH COURSE CHEMICAL CHANGES
HTTPS://WWW.YOUTUBE.COM/WATCH?V=37PIR0EJ_SE
REACTIVITY
•
Reactivity in science refers to
how various chemicals
participate in chemical
reactions when they are
exposed to other substances.
•
A chemical that reacts easily
with other substances is
considered highly reactive.
•
Examples:
•
One example of a reactive material is
magnesium, which burns brightly when heated.
In contrast, platinum does not burn when
heated and it is considered non-reactive.
•
Some chemicals react together so strongly that
they create a new substance called a compound.
A common example of a compound formed
through reactivity is water, formed when
hydrogen and oxygen react.
SUBLIMATION
•
When a solid changes directly to a gas, skipping the liquid
phase.
•
https://www.youtube.com/watch?v=PaOFohqjZ1s
Explore the nature of matter through the concepts of physical and chemical changes. Learn to distinguish between physical changes where the form or shape of a material alters without new substances forming, and chemical changes which result in the creation of new compounds. Discover reactivity in chemical reactions and the concept of sublimation as a solid transitions directly into a gas. Watch educational videos and examples to deepen your understanding of these fundamental scientific principles.
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Presentation Transcript
VOCABULARY ADVANCED CLASS Matter Unit 1.3 Week of August 22, 2016 You will need 4 index cards
S8P1. Students will examine the scientific view of the nature of matter. e. Distinguish between changes in matter as physical (i.e., physical change) or chemical (development of a gas, formation of precipitate, and change in color).
eactivity, combustability, precipitate, oxidation) chemical change, physical change, sublimation,
PHYSICAL CHANGES Examples: crumpling a sheet of aluminum foil melting an ice cube casting silver in a mold breaking a bottle A material may change shapes or forms while undergoing a physical change, but no chemical reactions occur and no new compounds are produced. the identity of the matter does not change. Easier or possible to change back.
Examples: burning wood souring milk mixing acid and base digesting food cooking an egg heating sugar to form caramel baking a cake rusting of iron CHEMICAL CHANGE A Material changes and produces a new substance. A new compound (product) results from a chemical change as the atoms rearrange themselves to form new chemical bonds. Difficult or impossible to reverse.
CRASH COURSE CHEMICAL CHANGES HTTPS://WWW.YOUTUBE.COM/WATCH?V=37PIR0EJ_SE
REACTIVITY Reactivity in science refers to how various chemicals participate in chemical reactions when they are exposed to other substances. A chemical that reacts easily with other substances is considered highly reactive. Examples: One example of a reactive material is magnesium, which burns brightly when heated. In contrast, platinum does not burn when heated and it is considered non-reactive. Some chemicals react together so strongly that they create a new substance called a compound. A common example of a compound formed through reactivity is water, formed when hydrogen and oxygen react.
SUBLIMATION When a solid changes directly to a gas, skipping the liquid phase. https://www.youtube.com/watch?v=PaOFohqjZ1s
