Quiz #1: Alchemy Flashcards
Hypothesis
a way of explaining an observation
Properties
A characteristic or quality of a substance
Chemistry
The study of what substances are made of, how they behave, and how they can be transformed. The study of how matter changes
Matter
Anything that has substance and takes up space; anything that has mass and volume
Mass
how much matter is in an object
Volume
how much space the matter takes up
Meniscus
the curvature of the top of a liquid in a container
Water Displacement
adding a solid to water to see how much the water rises in order to find the volume of that object
Density
how tightly packed the matter is
Intensive property
a property such as color that doesn’t change with the amount of the substance
Extensive property
A characteristic, such as volume or mass, that is specific to the amount of matter and therefore changes if the quantity of the substance changes.
Neuroplasticity
the part of your brain that keeps growing as you gain more knowledge.
Growth Mindset
the belief that abilities can be developed, and that mistakes are learning opportunities and not failures.
Fixed mindset
Belief that your intelligence and abilities cannot be changed.
Alchemy
the science of changing substances into other substances; took place in the medieval times and were the precursors to chemists
Elements
the building materials of all matter; there are about 118 known elements
Chemical symbols
A one or two letter representation of an element
Compounds
a pure substance that is a chemical combination of two or more elements in a specific ratio
Chemical Formula
a combination of element symbols and numbers representing the composition of a chemical compound
Phases
the physical form of matter such as the solid, liquid, or gaseous state
Aqueous solution
a solution in which water is the dissolving medium or solvent
Chemical changes/reactions
a chemical transformation that alters the composition of one or more substances so that one or more substances with new properties are produced
The law of conservation of mass
the law that states that mass can’t be gained or lost in a chemical reaction, and that matter can’t be created or destroyed
Dimitri Mendeleyev
alive in the late 1860’s; wanted to find a way to make it easier to remember and understand elements and their chemical behavior
Reactivity
how an element or compound combines chemically with other substances, and the speed of their reaction
Atomic mass
the mass of a single atom (or isotope) of an element; this is measured in atomic mass units
Atomic number
the consecutive whole numbers associated with elements on the periodic table
Period
a horizontal row on the periodic table
Metal
an element that is generally shiny and malleable and an excellent conductor of heat
Nonmetals
an element that does not exhibit metallic properties
Metalloid
an element that has properties of both metals and nonmetals
