Chemistry Test Review

The number of protons in an atom is....

• Neutron number
• Electron number
• Mass number
• Atomic number

Answer explanation

Tags

NGSS.MS-PS1-1

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

• gas
• liquid
• plasma
• solid

Tags

NGSS.MS-PS1-1

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

• particle
• atom
• compound
• molecule

Tags

NGSS.MS-PS1-1

Positively charged subatomic particles are called ......

• neutrons
• electrons
• photons
• protons

Tags

NGSS.MS-PS1-1

The protons and neutrons stay together inside the .....

• cytoplasm
• nucleus
• electron cloud
• cell membrane

Tags

NGSS.MS-PS1-1

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

• valence number
• electron number
• atomic number
• atomic weight

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

• solution
• compound
• mixture
• element

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• liquid
• solid
• plasma
• gas

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

• mixture
• element
• solution
• compound

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

• element

• solution

• pure substance
• compound