Atoms, Molecules, and Compounds
The basic building block of all matter
What is the atom?
A liquid, solid, or gas
What are the phases of matter?
The arrow in a chemical reaction
What is yields?
A characteristic of matter that can be observed or measured without changing the identity of the matter
What is the physical property of matter?
A table listing all of the elements in an organized way
What is the periodic table of elements?
A substance consisting of atoms of two or more different elements chemically bonded
What is a compound?
The densest phase of matter
What is a solid?
A process in which atoms of one or more substances rearrange to form one or more new substances
What is a chemical reaction?
The amount of matter in an object
What is mass?
Al
What is the symbol for aluminium?
A substance that consists of only one type of atom
What is an element?
The 2 in 2H2O2 determines the number of
What is the number of molecules?
A product in this chemical equation CH4 + 2O2 -> CO2 + 2H2O
What is CO2 or 2H2O
The mass per unit volume of a substance
What is density?
The number of protons in the nucleus of the atom on the periodic table of elements defining the element
What is the atomic number?
Two or more atoms are held together by covalent bonds and act as a unit.
What is a molecule?
The number of hydrogen atoms in the molecule H2O
What is 2 atoms?
A reactant in this chemical equation CH4 + 2O2 -> CO2 + 2H2O
What is CH4 or 2O2?
A characteristic of matter that can be observed as it changes to a different type of matter.
What is a chemical property of matter?
The number of protons and neutrons in the nucleus of the atom on the periodic table of elements
What is the atomic mass?
C6H12O6
What is a chemical formula?
The number of carbon atoms in CO2
What is one atom?
CH4 + 2O2 -> CO2 + 2H2O
What is a chemical equation showing the conservation of mass?
The type of properties that allow matter to become a new substance
What are the chemical properties of matter?
The most stable elements are found here
What is on the right hand side known as noble gases?