Atoms
this subatomic particle is positive and located in the nucleus of the atom
What is a proton?
the vertical rows of the Periodic Table
What is a group?
An element that has characteristics of metals and nonmetals
What is a metalloid?
A mixture where the components are uniformly distributed throughout
What is a homogeneous mixture?
In a neutral atom, the number of protons is equal to this...
What is an electron?
this subatomic particle is negative and is not located in the nucleus
What is an electron?
the horizontal rows of the Periodic Table
What is a period?
An element that is conductive, malleable and ductile
What is a metal?
A mixture where the components are NOT uniformly distributed
What is a heterogeneous mixture?
The atomic mass of an element is equal to...
What is the number of protons plus neutrons?
this subatomic particle is neutral and located in the nucleus of the atom?
What is a neutron?
The group number is equal to this
What is the number of valence electrons?
An element that is brittle and NOT conductive
What is a nonmetal?
Two or more components that are chemically bonded
What is a compound?
The number of protons in an atom is equal to this (ALWAYS)
this specific type of subatomic particle determines the atoms reactivity
The period number is equal to this
What are the energy levels/shells?
What is oxygen?
Cereal and milk is an example of this type of mixture
What is a heterogeneous mixture?
If a neutral atom has 14 protons it has this many electrons
What is 14?
this subatomic particle determines the identity of the atom
What is a proton?
This person organized the modern Periodic Table
Who is Dimitri Mendeleev?
A nonmetal located in group 1 and period 3
What is sodium?
Lemonade is an example of this kind of mixture
What is a homogeneous mixture?
An atom has a mass of 57, 33 protons and ________ neutrons
What is 24?