Mrs. Chandler's Science Class

Middle School Science Dictionary and Encyclopedia

A C D E H M N O P Q R S

electron

  1. It is a negatively charged subatomic particle. It is approximately 1/1835 the mass of a proton or neutron.

evidence

  1. In a CER, it is the data and/or observations used to support the claim.

homogeneous

  1. chemistry: the components that make up the mixture are uniformly distributed throughout the mixture
  2. genetics: identical alleles for a specific trait

hypothesis

  1. It is a proposed prediction or explanation based on evidence. Remember that it is an if/then sentence.

metalloids

  1. a chemical element that exhibits some properties of metals and some of nonmetals

metals

  1. a shiny material that is shiny, conducts heat, conducts electricity, is malleable, and ductile

molecule

  1. It is the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.

molecule

  1.  a molecule is a group of two or more atoms that are bonded together, and is the smallest form of a compound

neutron

  1. A neutron is the particle in the atomic nucleus with a mass of one and a charge of zero.

observation

  1. The use of the senses (hearing, sight, touch, etc.) to gather information.