Chemistry Midterm Review

Lewis Dot diagram does this

The electrons in the outermost energy level are called this:

An example of a chemical change is

Nitrogen is used and reused as it is cycled through the environment. This is an example of:

How many protons does potassium have?

All matter is made of atoms, atoms are indestructible, All atoms of 1 element are exactly alike

The atomic number indicates the amount of what in an atom?

In the image Na, H, Ca, etc. are shown with different bands of light, these characteristics are

If an atom of sodium has 11 protons, 11 electrons and 12 neutrons. What is the atomic number?

The sum of the protons and the neutrons in the nucleus is the:

An explanation based on many observations and supported by the results of many experiments

French Chemist Proust observed water always had 11.2 % H and 88.8% O. This is the premise for

Each one of these atoms has 1 proton but different numbers of neutrons, which means:

In hot chocolate, cocoa is the

A sample of copper dust is 2g this is said to be

Shown are the melting points of different substances these are considered to be

A testable prediction usually created from observing a phenomenon

To find out whether a hypothesis is supported, it must be tested by repeated theses:

A fact of nature that is observed so often that it becomes accepted truth.

This is a

When considering Matter at the atomic level it is

This picture displays all forms of radiant energy, it is called the:

The regions through the space surrounding the nucleus where electrons are most likely found.

Atoms of an element that are chemically alike but differ in mass are called:

Negatively charged particles are called:

Positively charged particles are called:

An example of a chemical formula is

In a list of the densities of common materials, which answer is UNREASONABLE?

LiCl is considered to have Lithium and Chlorine atoms, it is considered to be

Rutherford's gold foil experiment uncovered the existence of the:

He was the 1st modern chemist, discovered the law of conservation of mass, discovered Oxygen