a type of nuclear radiation consisting of 2 protons and 2 neutrons

Basic unit of matter

An atom's central core, containing protons and neutrons.

A particular preference or point of view that is personal, rather than scientific. Prejudice.

A subatomic particle that has a negative (-) charge

A substance that cannot be broken down into simpler substances. Example: Oxygen

a proposed explanation made on the basis of limited evidence as a starting point for further investigation.

J.J Thomson's model of an atom, in which he thought electrons were randomly distributed within a positively charged cloud

Gold foil experiment, discovered nucleus

credited with developing the Scientific Method

dominant explanation supported by a mountain of evidence (example: Cell Theory, Quantum Theory)

A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.

subject to change as new information or technology challenges existing theories

use accurate record keeping, openness with one's peers, and replicate experiments to compare results.

Information obtained through the senses.

The act of trying out a new procedure, idea, or activity.

new way of thinking during the Scientific Revolution - Sir Francis Bacon argued that these are the best ways to gain knowledge about the natural world