The Atom
This is the positive subatomic particles inside the atom's nucleus.
What is a proton?
This is the name of the vertical columns on the periodic table.
What are Families/Groups?
The molecular formulas on the left side of the yield arrow. (for 8th grade chemistry)
What are reactants?
Somethings do not change the substance when observed.
What are physical properties?
A substance that is the same throughout, whether that means one element, molecule or compound.
What are pure substances?
This subatomic particle has an atomic mass of 1 but no electrical charge.
What is a neutron?
This family is the most reactive family, categorized by their high volatility.
What is Family-1, Alkali Metals?
The molecular formulas on the right side of the yield arrow. (for 8th grade chemistry)
What are products?
Things that changes the substance when they are observed.
What are chemical properties?
Matter cannot be created nor destroyed. It may only change shape.
What is the Law of Conservation?
These particles are not found in the nucleus and have a mass so small it is ignore when calculating atomic mass.
What is an electron?
This is the man that crafted our modern periodic table.
Who was Dmitri Mendeleev?
The arrow in the chemical equation.
Yield Sign (Yield Arrow)
A reaction that releases energy, feels hot.
What are exothermic reactions?
A molecular formula that contains 2 Carbon atoms and 1 hydrogen atom.
What is CO2?
This atom has 12 protons, 8 neutrons and 12 electrons. It has this for its atomic mass.
What is 20?
The first element on the periodic table.
What is Hydrogen?
The balanced form of CH4 + O2 ---> CO2 + H2O.
What is CH4 + 2O2 ----> CO2 + 2H2O?
Reactions that feel cold and absorb energy.
What are endothermic reactions?
The most common types of elements.
What are metals?
These pure substances are classified b y their unique types of atoms.
What are elements?
How the periodic table calculates the atomic mass of an element.
What is Protons (Atomic Number) + Neutrons?
The balanced form of KNO3 ---> KNO2 + O2.
What is 2KNO3 ---> 2KNO2 + O2?
The mass of a 15g chocolate bar.
Physical Property
Elements that are semi-conductive, solid at room temperature and are known for being in computer parts.
What are metalloids?