Periodic Table
Structure of the Atom
Mixtures and compounds
Elements
Compounds and Mixtures
100
an arrangement of the elements by increasing atomic number and by changes in physical and chemical properties.
What is the periodic table
100
particle with an electrical charge of 1-
What is an electron
100

A blend of compounds or elements.

What is a mixture?

100

What is the atomic number of Phosphorous

15

100

This is a change that occurs when a substance changes its composition by forming one or more new substances.

What is a chemical change?

200
Na on the periodic table
What is Sodium
200
particle with no charge
What is a neutron
200

A tree burns to form ashes

What is a chemical change?

200

What is the atomic number of Helium?

2

200

A change in odor is evidence that a _________ change may have occurred.

What is chemical 


300
a vertical column of elements on the periodic table
What is a group
300
the small, positively charged center of the atom
What is the nucleus
300

What is the symbol for Chlorine

Cl

300

What is the atomic mass of Copper?

63.55

300

The simplest form of matter

What is an Element?


400
a horizontal row of elements on the periodic table
What is a period
400
particle with an electrical charge of 1+
What is a proton
400

A mixture that is the same throughout. The differences cannot be seen.

What is Homogeneous mixture?

400

What is the atomic mass of Titanium?

47.867

400

A mixture that is physically distinct and differences can be seen throughout

What is Heterogeneous mixture?

500

The electrons in the outermost shell, or energy level, of an atom.

What is Valence electrons?

500
the area around the nucleus of an atom where its electrons are most likely found
What is an electron cloud
500

The ability of a substance, the solute, to form a solution with another substance, the solvent.

What is solubility?

500

Odorless, colorless, nonflammable, and monotonic gases that have low chemical reactivity.

What are noble gasses?

500

Two or more elements that are chemically combined

What is a compound?

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