Elements
What element has the symbol of H?
Hydrogen
True or False: Most elements on the periodic table are metals
True
Flammibility is what type of property?
Chemical
What you begin a reaction with are called what?
Reactants
What is it called when a solid goes to a liquid?
Melting
What are all three parts of an element?
Protons, Neutrons, Electrons
This elements symbol is Fe what element is it?
Iron
Luster is an example of what type of property?
Physical Property
A reaction where it absorbs the energy of it's surroundings is called what?
Endothermic Reaction
What type of energy does a roller coaster at the top of the hill have before it drops?
Potential
When two elements combine it is called a what?
Compound
Painting the walls of your bedroom is an example of what type of change?
Physical
Photosynthesis is what type of reaction?
Endothermic
Rank these from fastest moving particles to slowest. (Liquid, Solid, Gas)
Gas, Liquid, Solid
What are the electrons on the outermost ring called?
Valance Electrons
What is a column on the periodic table called?
Group
What is an example of a chemical change?
Answers will vary
What type of energy does your food have before you eat it?
Chemical
What is an example of a heterogenous mixture?
Answers will Vary
If an element has an atomic mass of 200.6g and an atomic number of 80 what is the number of neutrons and the symbol for this element?
120 and Hg
What was the name of the scientists name who created the periodic table?
Dimitri Mendeleev
Explain why we know a substance underwent a chemical change?
Once a chemical change happens the object cant go back to it's original state
How does a roller coaster lose some of its potential and kinetic energy to thermal energy?
The tires spinning on the track create friction which heats up the track
What is it called when a solid turns into a gas?
Sublimation