Scientific Method
Information gathered using the senses
What is an observation
Anything that has mass and takes up space
What is matter
A combination of substances not chemically bonded
What is a mixture
Total path traveled by an object in motion
What is distance
A chart that organizes elements
What is the Periodic Table of Elements
A chemical bond resulting from the transfer of electrons
What is an ionic bond
A testable explanation for an observation
What is a hypothesis
The smallest unit of matter
What is an atom
Matter with no definite shape or volume
What is a gas
Distance divided by time
What is speed
The number of protons in an atom
What is the atomic number
A bond fromed by the sharing of a pair of electrons
What is a covalent bond
A statement about which competent observers can agree
What is a fact
Characteristics that can be observed without changing matter's compostion
What are physical properties
Mass divided by volume
What is density
Speed with direction
What is velocity
Positively charged subatomic particles
What are protons
A positively charged ion
What is a cation
A scientific statement that describes a natural pattern
What is a law
A substance made of only one type of atom
What is an element
A mixture with unevenly distributed parts
What is a heterogenous mixture
A change in position over time
What is motion
Atoms of the same element with differing numbers of neutrons
What are isotopes
The lowest whole number ratio of ions
What is the formula unit
The variable in an experiments that responds to change
What is the dependent variable
Substances made of two or more atoms chemically combined
What is a compound
Physical properties that depend on the amount of matter
What are extensive properties
This Law stated that an object in motion stays in motion unless acted upon by an external force
What is Newton's First Law of Motion
Electrons in the outermost shell of an atom
What are valence electrons
A formula that shows the exact number of atoms in a molecule
What is the molecular formula