Chapter 7 Flashcards
Alchemists
Olden-day chemists who. Mixed chemicals and tried to change ordinary metals into gold
Investigation
Activity aimeded at finding that info
Observations
Info obtained by the use of our senses or measuring instruments
Scientist
People skilled in or working in the fields of science; scientists use experiments to find out about
Pure substance made up of only one type of atom
Elements
Atoms
A very small particle that can make up all things. Atoms have the same properties as the object they make up.
Atomic number
Number of photons inches nucleus of an atom. The atomic number determends witch element an atom is
Compound
Substance made up of two or more different types.
Bonded
Forces that holds particles of matter, such as atoms, together
Mixture
A combination of substances in witch each keeps its own properties
Hydrogen
The element with smallest atoms.
Periodic table
A table listing al, known elements
Group
In the ic table of elements a single vertical column is called a group
Inept
No reaction channel
Noble
Elements in the last column of the periodic table
