Intro to Chapter 3

Basic unit of matter

• element

• atom

• compound

• molecule

pH less than 7 is

• acidic

• basic

• neutral

Term for when water changes from a liquid to a gas is called

• evaporation

• precipitation

• condensation

• transpiration

Matter can be used up and it goes away

• True

• False

Match the following

• Biosphere

• Made up of the hard rock on and just below Earth's surface

• Atmosphere

• Made up of all the rock at and below Earth's surface

• Hydrosphere

• Consists of all water on the Earth's surface, underground, and in the atmosphere

• Geosphere

• consists of the layers of gases surrounding the planet

• Lithosphere

• Consists of all the planet's living or once-living things and the nonliving parts of the environment

Matter that organisms require for their life processes are

• biogeochemical materials

• decomposers

• producers

• nutrients

Ice is less dense than water

• True

• False

pH greater than 7 is

• acidic

• basic

• neutral

"NaCl" is an example of a(n)

• atom

• compound

• element

• isotope

The charge of an electron in an atom is

• positive

• negative

• neutral