Subatomic Particles
These have a negative electrical charge...
What are electrons?
These are the smallest particles of all substances.
What are atoms?
O is the chemical symbol for....
What is oxygen?
Compounds are represented by...
What are chemical formulas?
Chemical equations can be used to model...
What is chemical changes?
These have a neutral electrical charge...
What are neutrons?
This energy level can hold 8 electrons?
What is second?
H is the chemical symbol for...
What is hydrogen?
Two or more elements combine to form a....
What is compound?
9CO2 + 12H2O contains how many molecules of carbon dioxide?
What is 9?
What is nucleus of an atom?
This cannot be broken down. It's in its original form.
What is a chemical element?
Between earth's crust, ocean, living matter, and atmosphere, this element is only found in earth's crust...
What is iron?
The number of each element in a compound is represented by a....
What is a subscript?
6CO2 + 9H2O contains how many molecules of water?
What is 9?
The atomic number tells the number of....
What is protons and electrons?
When atoms join together to form a new substance, they are held together by their...
What is electrons?
Aluminum, silicon, oxygen, copper, and iron are all found in...
What is the earth's crust?
Two elements bond together to form a...
What is compound?
Chemical equations show elements that form a chemical bond to create a...
What is chemical reaction?
A core of protons and neutrons surrounded by electrons is an......
What is an atom?
Atoms can be represented by models such as a...
What is bohr model?
A element with an atomic mass of 32 and an atomic number of 16 would have how many neutrons?
What is 16?
Chemical equations show elements that form a chemical bond to create a...
What is chemical reaction?
N2 + H2 -----> NH3 is an example of...
What is a chemical equation?