Chapter 2-3 Vocab Quiz

Question 0

Molecule

Answer 0

-Two or more atoms joined together by a bond

Question 1

Element

Answer 1

• the simplest form of matter that has a unique set of properties.
• An element cannot be broken down into simpler substances by chemical means.
• It is made up of one or more atoms which can not be destroyed. (they are indestructible)

Question 2

Compound

Answer 2

-Two or more different atoms joined together by a bond

Question 3

Atom

Answer 3

• The smallest particle of an element that retains its identity in a chemical reaction
• They cannot be changed by chemical (acid, fire, nuclear bomb) or physical means (filtration, magnets, boiling, or hitting with an axe).

Question 4

Subatomic Particles

Answer 4

• particles which are smaller than an atom because they make up the atom
• Include protons, neutrons, and electrons

Question 5

Nucleus

Answer 5

• The tiny, dense central portion of an atom, composed of protons and neutrons
• This is the portion of the atoms with the greatest mass

Question 6

Bond

Answer 6

• amutualattractionbetweentwoatoms, usually caused byinteractions between electrons
• force of attraction result in the secure joining of the two atoms.

Question 7

Lewis Structure

Answer 7

• Is a representation of molecules and compounds
• Chemical symbols and solid lines are used to represent bonds between atoms
• Shows a molecules composition (meaning what atoms it possesses) and connectivity (meaning which atoms are bonded to each other)

Question 8

Ball and Stick Model

Answer 8

• representation of molecules and compounds by a drawing on a page or a 3D model which can be handled
• Similar to Lewis Structures ball and stick models use chemical symbols and solid lines to represent bonds between atoms
• shows you a molecules composition (meaning what atoms it possesses) and connectivity (meaning which atoms are bonded to each other).
• Unlike Lewis structures, ball and stick models, show you use colored balls (with or without a chemical symbol) to represent its atoms

Question 9

Chemical Symbol

Answer 9

A one or two letter representation of an element based off of the Latin name for the element
-The first letter is always capitalized and the second letter is always lowercase.

Question 10

Periodic Table

Answer 10

-An arrangement of elements in which the elements are separated into groups based on a set of repeating properties.

Question 11

Atomic Model

Answer 11

-The drawing out of a chemicals protons, neutrons, and electrons