Periodic Table
The number of Protons and neutrons in an atom of an element.
What is Atomic mass?
A change that can be reversed and nothing new is formed.
What is a physical change?
The building blocks of matter.
What are atoms?
Characteristics of an element that can be observed without changing the substance
What are Physical properties?
What law states that matter can't be created nor destroyed?
Law of conservation of matter
The most reactive group in the periodic table.
What are alkali metals?
Physical or chemical? Gold melting into liquid.
Physical
Fluids which contain insoluble solid particles that eventually settle out.
What are suspensions?
True or false: Mass and Matter are the same thing.
False, Mass is the amount of matter in an object while weight is the force due to the pull of gravity.
True or false: The mass of a substance will not remain the same if it is in a different state.
False, It will always remain the same, whether if its whole, separated, or in a different state.
The number of protons in an atom of a specific element.
What is Atomic number?
True or false: An indication of a chemical change is gas formation.
True, formation of gas is one of the many indications of a chemical change.
A pure substance that is made up of different types of elements.
What is a compound?
Color, density, mass, and solubility are examples of
Physical properties.
What is the general format of a chemical equation?
reactants --> products
The least reactive group on the periodic table.
What are noble gases?
If wood logs are chopped and burned for a campfire, is it a physical change or a chemical change.
Trick question, It's both. The wood being chopped is a physical change but the wood being burned is a chemical change.
True or false: Colloids are only classified as heterogeneous mixtures.
False, colloids can be either heterogeneous or homogeneous.
The characteristic ways in which an element or compound chemically behaves.
What are chemical properties?
The small number that follow particular elements.
What is subscripts?
The elements along the staircase.
What is metalloids?
True or false: A chemical property can be observed without changing the object or matter.
False, Chemical properties can only be observed by changing the subsance
True or false: Homogeneous mixtures are not uniform.
False, Homogeneous mixtures are always uniform and always look the same.
Name three chemical properties.
Reactivity, Ability to react with acids or bases, Flammability, Combustibility, ability to oxidize(rust), ability to tarnish.
Solve the chemical equation: C₆H₁₂O₆ + O₂ → CO₂ + H₂O.
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O