Chemistry
What is an atom?
An atom is the simplest form of matter in the universe.
What chemical symbol is Hydrogen?
H
What is the standard unit to measure speed?
Meters per second.
What is a physical change?
It changes the appearance of an object but the properties do not change. For example, a haircut.
What is the only metal that is liquid at room temperature?
If someone runs 21 miles in 3 hours, what's their pace?
What is the Law of Conservation Mass?
Matter cannot be created nor destroyed during a chemical reaction.
How are the elements organized on the periodic table?
Atomic numbers
What is a chemical change?
A chemical change is when a new substance is formed with new properties.
Who is Dmitri Mendeeleev?
Russian chemist who made the first periodic table.
What is a mixture?
A mixture consists of two or more substances that are physically combined but not chemically bonded.
What are noble gases?
Unreactive, stable nonmetals in group 18.