Section 1
Two or more elements combining in fixed proportions.
What is a compound?
Pure substances that are made of one type of atom.
What are elements?
Sodium chloride (NaCl) is commonly known as ___.
What is table salt?
In a chemical ___, products are formed when reactants undergo change
What is a reaction?
The rows in the periodic table.
What are periods?
The temperature at which a liquid turns into a gas.
What is boiling point?
A model that describes atoms as positively charged spheres with negatively charged electrons inside.
What is the "raisin bun model"?
Pure substances formed as a result of the attraction between ions.
What are ionic compounds?
Matter is not created or destroyed in a chemical reaction.
What is the law of conservation of mass?
Substances dissolved in water.
What are aqueous solutions?
A substance in which the materials it is made of are not separately visible.
What is a solution?
A Greek philosopher who claimed that matter was made of earth, air, fire and water.
Who is Aristotle?
Rn in the periodic table.
What is radon?
____ are substances that help reactions proceed faster.
What are catalysts?
The body responsible for agreeing on names for compounds.
What is the International Unit of Pure and Applied Chemistry (IUPAC)?
The ability of a substance to be stretched into a long wire.
What is ductility?
Sodium's Latin name is ___.
What is natrium?
CaCO3(s)
What is limestone?
Chemical reactions that absorb heat energy.
What are endothermic reactions?
The prefix _____ is used when there are 4 atoms in a formula.
What is tetra-?
A 6 on the Mohs' hardness scale.
What is feldspar?
In 1597, this German alchemist published the first ever chemistry book, entitled Alchemia.
Who is Andreas Libau?
C12 H22 O11 is the formula of this common molecular compound.
What is sugar?
The slow chemical change that occurs when oxygen in the air interacts with metals.
What is corrosion?
Bleach's chemical name.
What is aqueous sodium hypochlorite?