Atomic Structure
These subatomic Particles have a positive charge
Protons
Matter with a fixed composition and properties
substance
The substance in a solution that is dissolved by another
solute
The atomic number of an element tells you number of what about the element
protons
A pure substance that cannot be broken down into simpler parts.
element
These subatomic particles have a negative charge
electrons
A combination of two or more substances in which the basic identity of the substances are not changed
mixture
The substance in the solution that dissolves the solute
solvent
The elements on the periodic table are arranged according to increasing...
atomic number
A pure substance that is made up of multiple elements combined together and can be broken down into each element.
compound
these subatomic particles have a neutral charge
neutron
Mixture is “different throughout,” different components will be seen depending on what part of the mixture you look at.
Heterogeneous mixture
Elements that have luster, conduct heat, and are malleable
metals
A horizontal row on the periodic table is known as which of the following?
period
A change in matter in which the identity of the matter does not change
physical change
Using the gold foil experiment, Ernest Rutherford discovered the nucleus of the atom. Which particle is not contained in the nucleus of the atom.
electrons
Mixture is the same throughout. Appears to be a pure substance but the components vary
homogeneous mixture
Elements that are poor conductors, brittle, and lack luster
nonmetals
A vertical column on the periodic table is known as which of the following?
group or family
The change of one or more substance into another substance
chemical change
Which sub atomic particle does not play a role in determining the atomic mass of an element?
electron
metal
Elements that are semiconductors, are some what malleable and can be either shiny or dull
metalloids
Who was the first person to organize a periodic table of elements?
Dmitri Mendeleev
Bohr discovered that electrons of the atom are located where?
in energy levels around the nucleus