Chemistry Test

The number of protons in an atoms is the atom's _________.

• atomic number
• atomic charge
• atomic weight
• atomic average

The state of matter which has a definite shape and definite shape and definite volume is classified as a _____________.

• solid

• liquid

• gas

• plasma

According to Democritus, the smallest part of an element is a(n) _______. Loosely translated, this means "not able to be divided."

• cell
• compound
• atom
• molecule

Positively charged subatomic particles are called _________.

• protons
• electrons
• neutrons
• photons

The protons and the neutrons stay together inside the _________.

• cytoplasm
• electron cloud
• mitochondria
• nucleus

The total number of protons and neutrons in an atom is the atom's ________.

• atomic weight/mass

• valence number
• electron number
• atomic number

A combination of elements that has different properties than elements that form is called _________.

• mixture
• element
• solution
• compound

The state of matter which has a definite volume, but the shape may change is classified as a ______________.

• gas
• solid
• plasma
• liquid

Different substances mixed together, but not chemically combined are called _____________.

• elements

• compounds

• mixtures

• solutions

A mixture of two or more substances that mix evenly with each other is called a(n) __________.

• pure substance
• compound
• solution

• element