Others
Shiny and great conductors to heat and energy, found on the lift side of the periodic table
What are Metals?
Two things found in the center of the nucleus and has a positive charge.
What neutrons and protons?
Change in the smell, odor, gas is formed
What are some signs that a chemical reaction has occurred?
The elements on the periodic table are divided into 18 columns called __________.
What are groups?
The number located on the top of a periodic table element.
What is the atomic number?
Dull and bad conductors to heat and energy found on the right side of the Periodic table
What are nonmetals?
The center of an atom
What is the nucleus?
Balances a chemical equation to make it equal
What is a coefficient?
The periodic table is divided into horizontal rows called ___________.
What are periods?
The one or two letter to represent an element on the periodic table.
What is a chemical symbol?
Share characteristics of metals and nonmetals, located in the middle of the periodic table
What are Metalloids?
A part of an atom with a negative charge
What is an electron?
Concentration, Temperature, Catalyst, Surface Area
What effects the rate of a chemical reaction?
The two rows separate from others are called __________ and __________.
What are lanthanides and actinides?
The name of an element.
What is a chemical name?
releases energy in a chemical reaction
What is exothermic energy?
A part of an atom with a positive charge
What is a proton?
States that matter cannot be created nor destroyed
What is the law of conservation of mass?
the number of _________ and the number of __________ in an atom are equal.
What are protons and electrons?
The average weight of an element on the periodic table.
What is the average atomic mass?
absorbs energy in a chemical reaction
What is endothermic energy?
A part of an atom with no charge
What is a neutron?
State that energy cannot be created nor destroyed
What is the Law of conservations of energy?
The elements in the periodic table are placed from left to right by increasing atomic number.
How are the elements on the periodic table organized?
different kind of an element but contains different numbers of protons and neutrons.
What is an isotope?