This is the largest group of elements, and all are good conductors of heat and electricity
What are metals
100
This is a pure substance made of two or more elements bonded together
What is a compound
100
Carbon dioxide and carbon monoxide molecules have different numbers of these
What are oxygen atoms
100
This uses chemical symbols and formulas as a shortcut to describe a chemical reaction
What is a chemical equation
200
A material made of only one type of particle is this
What is a pure substance
200
This group of elements is located to the right of the stair step line and includes helium, carbon, and oxygen
What are nonmetals
200
This is the common name for dihydrogen monoxide, a very dangerous substance!
What is water
200
This is a combination of chemical symbols and numbers used to represent a substance
What is a chemical formula
200
The starting materials in a reaction are called these
What are reactants
300
These are traits that help identify an element
What are characteristic properties
300
This group of elements has some properties of the other two major groups, and includes elements like silicon and arsenic
What are metalloids
300
Covalent compounds use these to help name them. It is based on the number of atoms of each element in the molecule
What are prefixes
300
The number in a chemical formula written below and to the right of a chemical symbol is called this
What is a subscript
300
All chemical equations must be... it shows that the numbers of atoms that you start with are still there after a reaction
What is balanced
400
Each element has a unique number of these in each atom of that element
What are protons
400
Each element can be represented by this. It is shorthand for the element
What is the chemical symbol of the element
400
The two major categories of compounds we have discussed
What are covalent and ionic compounds
400
One molecule of glucose contains this many atoms
What is 24
400
In order to balance an equation, these number might need to be used
What are coefficients
500
This is a way to organize all of the elements in a systematic way
What is the Periodic Table of the Elements
500
This is the Russian scientist who developed a way to organize the elements
Who is Dmitri Mendeleev
500
A compound has different properties than these
What are the elements that make up the compound? Please remember this for the quiz!
500
If a compound is made of a metal and a nonmetal it is called this
What is an ionic compound
500
Antoine Lavoisier developed an idea that later became known as this. It states that mass is neither created nor destroyed in ordinary chemical or physical changes