Topic 1: Atoms and the Periodic Table

This is equal to the number of protons and neutrons in the nucleus of an atom.

The ease and speed with which an element combines or reacts with another element

This type of bond is made by sharing electrons.

Ability to be hammered into thin sheets or roles

This scientist was responsible for discovering the electron

An _______is an atom or group of atoms that has either a positive or negative charge

Metals, Metalloids, Nonmetals indicate a

Two of more elements chemically combined in a specific ratio.

Valence Electrons are found in the:

A reaction that pairs and acid and a base?

This scientist was the first to publish four ideas about atomic theory.

A chart showing all the elements arranged according to patterns and properties

Sour taste, corrosive compound that reacts with metals and carbonates

Ordered from left to right by increasing atomic number.

The number of electrons that reside in the outer energy level of an atom is called the ______.

This scientist was responsible for identifying a small dense positively charged nucleus.

High Melting points and excellent conductivity are examples of

Ordered from lower reactivity to higher reactivity.

The number of protons in the nucleus of an atom is the:

A group of non-reactive gases

Bitter Taste, slippery texture, turns red litmus paper blue

This is a sub-atomic particle with no charge.

This a a group of atoms that are joined together by covalent bonds

One or two letter abbreviation for an element

The ability to reflect light: Shiny

A compound that releases hydrogen Ions within a solution is a

Ability to be drawn into thin strands.

This is the lightest sub-atomic particle with a negative charge

Atoms of the same element with different number of neutrons.

This is a compound that releases hydroxide Ions within a solution

This is a compound that changes color when it comes into contact with an acid?

A substance that can conduct electrical current under certain conditions but not under others.

Conductivity is a property of

The smallest particle that still be considered and element.

A family of soft metals that can be very reactive.

This type of bond is formed from gaining or losing electrons.