Vocabulary
the temperature at which a substance changes from the solid phase to the liquid phase
melting point
H
Explain what a property of a substance is
something that can be observed about a substance, such as color, smell, or boiling point
an ending substance that is made during a chemical reaction
product
H2O
Name 2 properties of iron oxide (rust)
reddish brown, solid, odorless
Explain the difference between atoms and molecules
atoms are a singular unit of matter, molecules are groups of atoms together
a starting substance that is part of a chemical reaction
reactant
Chemical formula for Hydrofluoric acid
Extra point if you get both
hydrogen
fluorine
Name 3 properties of O2 (oxygen gas)
colorless, gas at room temperature, odorless
When you burn something, what happens to the atoms?
It's a chemical reaction so the atoms rearrange
how atoms move in a chemical reaction, to change the order or position of something
rearrange
chemical formula for salt
Name 2 properties of hydrofluoric acid
clear, strong smell, liquid
What does an endothermic or exothermic reaction include?
heat/ fire
a substance able to cause damage
corossive
chemical formula for fire
O2
Oxygen
Are these substances the same with the same properties? If so, what properties are different? (carbon dioxide and carbon monoxide)
CO2 and CO
no, they have different melting points and boiling points
The law of conservation matter in chemical reactions
atoms cannot be created nor destroyed in a chemical reaction, they simply rearrange