The quality of a shiny object by a very bright light.
What is Luster.
100
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.
What is physical change?
100
The tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy.
What is Reactivity.
200
A particle having no charge and the mass of slightly greater than a proton.
What are Neutrons.
200
The number of protons in the nucleus of an atom.
What is Atomic Number?
200
Properties that do not change the chemical nature of matter.
What is Physical Properties.
200
Chemical changes occur when a substance combines with another to form a new substance.
What is chemical change?
200
The process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.
What is Ionization.
300
The group of electrons revolving around the nucleus of an atom.
What is the Electron Cloud.
300
An abbreviated lettering for an element.
What are element symbols?
300
Properties that do change the chemical nature of matter.
What is Chemical Properties.
300
A chemical property is any of a material's properties that becomes evident during a chemical reaction
What is chemical property?
300
Elements of group 1A.
What are Alkali Metals.
400
A particle having a negative charge.
What are electrons.
400
A table of all known elements ordered by atomic number.
What is the periodic table?
400
The degree of compactness of a substance.
What is Density.
400
A reversible reaction is a chemical reaction that results in an equilibrium mixture of reactants and products.
What is reversibility?
400
Useful for determining many aspects of chemistry such as various physical and chemical properties.
What is Atomic radius
500
A stable particle with positive charge equal to the negative charge of an electron.
What are Protons.
500
The mass of an atom of a chemical element expressed in atomic mass units
What is atomic mass?
500
Easily ignited and capable of burning rapidly.
What is Flammability.
500
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
What is chemical reaction?
500
Specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties.