Structures and Properties of Matter

The Periodic Table of the Elements is Specifically____

• Empty

• Organized

Protons and neutrons are tightly bound in a tiny_________

• protons

• mass

• nucleus

• negative

The ______ is composed of subatomic particles: protons, neutrons, and electrons that affect the properties of an atom.

• charges

• element

• center

The nucleus is located in the _____ of the atom with the electrons moving in random patterns in the space around the nucleus.

• electrons

• center

• groups

• nucleus

Protons have a ______ charge, while neutrons have ___ charge.

• positive, no

• positive, yes

• negative, no

• negative, yes

Silicon Symbol:

• Fe

• N

• S

• Si

Oxygen Symbol:

• C

• O

• Oy

• Cl

Gold Symbol:

• Na

• Au

• G

• K

elements are ______ substances that cannot be changed into simpler substances.

• charged

• grouped

• pure

• left

Mendeleev distinguished elements by...

• atomic

• protons

• atomic weight

• neutrons