Elements and the Periodic Table

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Can you name the Elements and the Periodic Table Key Terms?

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DefinitionTerm
Scientist who thought that the atom was just a round ball that couldn't be broken into smaller pieces
Sum of the protons and neutrons of an atom
True or false: Most metals are not good conductors of heat and electricity.
The modern periodic table is arranged in order of increasing ______.
Negatively charged particles in an atom
Scientist who thought that electrons were found in specific orbits around the nucleus
Region in the center of an atom
Rows in the periodic table
Scientist who discovered electrons
Substance that can conduct electric current under some conditions but not under other conditions
A material that can be hammered or rolled into flat sheets or other shapes is said to be _____
Particles that move around in the cloud-like region of the atom
Particle in the atom with no charge
Describes how shiny a metal is
Unit used to measure the mass of an atom (abbreviation)
These have some properties of metals and some properties of nonmetals
The deterioration of a metal due to a chemical reaction in the environment
Atoms with the same number of protons and different numbers of neutrons
Scientist who discovered that the atom had a positively charged nucleus
DefinitionTerm
Every atom of an element has the same number of _____.
Scientist who developed the first periodic table of elements (last name only)
Region where protons and neutrons are found
The most reactive type of metal
Number of electrons that can be held in the second shell (spell out number
Number of electrons that can be held in the first shell (spell out number)
The smallest particle that can still be considered an element
Name of the modern model of the atom
True or false: The number of protons always stays the same as the number of electrons in an atom.
True or false: Most nonmetals are poor conductors of electric current and heat.
Average mass of all the isotopes of an element
Particle in the atom with the smallest mass.
The number of protons in the nucleus of an atom
A material that can be pulled out into long wires is said to be _____.
Columns in the periodic table
True or false: Most metals are solid at room temperature.
The ease and speed with which an element reacts with other substances
Positively charged particles in an atom

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