Final semester 1

A _________ studies groundwater and surface water.

• hydrologist
• meteorologist
• climatologist
• geochemist

The combined number of protons and neutrons is the _______________.

• atomic number
• mass number
• phone number
• atomic mass

An _____________ represents the area in an atom where an electron is most likely to be found.

• energy level
• isotope
• orbit
• super nova

_________________ is the attraction of two atoms for a shared pair of electrons that holds the atoms together.

• An ionic bond
• A covalent bond
• Jame bond
• Bail bond

An atom that gains or loses an electron is a charged particle called ____________.

• ion
• molecule
• un-atom
• quark

____________ is a substance that cannot be broken down into a simplier sustances.

• compound 
• molecule
• element
• ion

The process of changing from a liquid into a gas is callled____________.

• evaporation
• sublimation
• condensation 
• elastic 

The basic building blocks of matter are____.

• atoms
• elements
• molecules
• compounds

The nucleus of an atom is made up of _______________.

• electrons, and neutrons
• protons, and neutrons, electrons
• protons and electrons
• protons and neutrons

A combination of two or more components that retain their identity is a(n) ____________.

• acid
• solution
• mixture
• base