Chemistry Test Practice

What is the smallest unit of all matter?

• atom
• proton
• neutron
• electron

Which of the following is not true about protons?

• It is the smallest subatomic particle

• It has a charge of +1

• It is found in the nucleus

Which of the following is true about electrons?

• It is the smallest subatomic particle

• It has a charge of +1

• It is found in the nucleus

The tendency of an element to react with other elements to produce compounds. 

• Chemical change
• Neutrality
  
• Reactivity
  
• Valence 

The number of protons in the atoms of a particular element that is unique only to that element.

• Atomic Mas
• Atomic Number
  
• Proton Number
• Mole 

The number of negatively charged particles in the most outer shell.

• Valence Electrons 
• Valence Neutron
• Valence Proton
• Valance Particles

A chemical substance made up of two or more kinds of atoms bonded together. 

• Mixture 
• Solution
• Compound
  
• None of the above

Tags

NGSS.MS-PS1-1

A pure substance containing only one type of atom.

• Element
  
• Simple Substance
• Single Substance
• Mixture

Tags

NGSS.MS-PS1-4

Which elements have the most similar chemical properties?

• K and Na
• K and Ca
• K and Cl
• K and S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which number is the atomic mass?

• 79
• 196.97