Periodic Trends
Published the first periodic table and discovered the periodic law
Who is Dimitri Mendeleev?
A standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
What is a mole?
A state of matter that has a definite shape and a definite volume
What is a solid?
A process during which chemical bonds between atoms are broken and new ones are formed.
What is a chemical reaction?
A law stating that the elements, when listed in order of their atomic numbers (originally, atomic weights), fall into recurring groups, so that elements with similar properties occur at regular intervals.
What is the periodic law?
6.02x10^23
What is Avogadro's number?
Releases heat/energy
What is exothermic?
The new substances that are formed in a chemical reaction
What is a product?
Discovered each element has unique number of protons and corrected Mendeleev's periodic table's errors by ordering elements by number of proton
Who is Henry Moseley?
The mass of one mole of any pure substance (compound or element)
What is molar mass?
Particles that are intermediate in size between those in solutions and suspensions
What are colloids?
A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
What is oxidation?
Metals, nonmetals, and metalloids
A property that reflects the quantity of matter within a sample
What is mass?
The amount of force exerted per unit area of a surface
What is pressure?
A reaction in which a gas, a solid precipitate, or a molecular compound forms from the exchange of ions between two compounds
What is a double displacement reaction?
Elements that cannot be found in nature alone
What are diatomic elements?
# of moles x molar mass g/mol
What is the formula to find mass?
The law that states that for a fixed amount of gas at a constant pressure, the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases
What is Charles' law?
A chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
What is a combustion reaction?