vocal 1.3 Mrs lee

The smallest unit of matter that has all chemical properties of that element?

example:very small can be seen using a microscope.

• chemical symbol

• atom

• polymer

a set of symbols used to describe the elements within a substance

example: Table salt is composed of two elements sodium and chlorine.

• chemical formula

• chemical symbol

• molecule

the one- or two-letter representation of an element; symbols are often derived from

example formulas, and equations example H1

• Chemical Symbol

• Atom

• Compound

A pure substance that is formed when two or more different elements combine; can usually be. separated into component elements by chemical reaction

example: water is a chemical compound contains one part oxygen 2 parts hydrogen

• compound

• molecule

• element

a pure substance that cannot be broken down into simpler substances by chemical reactions

example oxygen, gas, gold

• molecule

• element

two or more atoms joined together

example a drop of water, two atoms joined together like water and hydrogen

• polymer

• molecule

• element

a large molecule that is made of small molecules that are arranged in a repeating structure

example: cellulose is ________of glucose, Plastic poly vinyl.

• molecule

• polymer

• element

• Particle interactions are involved in the changes that take place in a burning match. ______occurred and gave way to chemical changes.  In a chemical reaction, something new is being made.

• What occurred?

• chemical explosion

• combustion

• reaction

• Atoms are the smallest part of matter and are made up of protons ____________________?

• • protons (positive charges)

• • protons (positive charges), neutrons (neutral charges) and electrons (negative charges).

• • electrons (negative charges).

• • protons (positive charges), neutrons (neutral charges)

• Protons and neutrons are in the ________and electrons orbit the ______.

• • nucleus

• atoms

• earth

• polymer