8th EOG science

Which is a bioindicator?

• current
• insect
• rock
• water

A subatomic particle that has almost no mass and a negative charge.

• Electricity
• Proton
• Electron
  
• Neutron

A positively charged subatomic particle located in the nucleus and has an atomic mass of 1.

• Neutron
• Valence
• Proton
  
• Electron

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 

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

• Mixture 
• Solution
• Compound
  
• None of the above

A pure substance containing only one type of atom.

• Element
  
• Simple Substance
• Single Substance
• Mixture

Which elements have the most similar chemical properties?

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

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

A coastal inlet or bay in which freshwater from rivers mixes with salty ocean water is called a(n)

• transition zone.
• abyssal plain.
• estuary
• hydrothermal vent.

Where is the majority of Earth's freshwater located?

• clouds
• Pacific Ocean
• polar ice caps
• rivers