Matter of Fact
This is defined as anything that has a mass and occupies space
What is Matter?
John Dalton proposed this atomic model because he envisioned tiny, indivisible atoms as solid spheres.
What is the "billiard ball model"?
On the periodic table, vertical columns are known as groups or families, while these are the horizontal rows.
What are periods?
This type of compound is a pure substance formed by the attraction between particles of opposite charges, combining a metal and a non-metal.
What is an ionic compound?
In a chemical equation, the starting materials are called reactants, and the new materials produced are called this.
What are products?
Boiling point, solubility, and conductivity are all classified as this type of property.
What is a physical property?
J.J. Thompson discovered sub-atomic particles called electrons and developed this model, which featured negative electrons embedded in a positive sphere.
What is the "raisin bun model"?
his Russian chemist organized the 63 known elements of his time into a pattern based on properties like melting point, density, and color.
Who is Dmitri Mendeleev?
Molecular compounds contain only these types of elements.
What are non-metals?
A chemical reaction that releases heat energy, causing heat to leave the reaction, is known by this term.
What is an exothermic reaction?
This type of mixture is completely uniform in appearance because one substance is thoroughly dissolved into another.
What is a solution (or a homogeneous mixture)?
In 1922, Niels Bohr advanced atomic theory by discovering that electrons don't swarm randomly, but instead move in these specific circular paths.
What are electron shells (or circular orbits)?
This measurement, which increases periodically across Mendeleev's chart, defines the average mass of an element's atom.
What is atomic mass?
This is an atom or group of atoms that has become electrically charged through the loss or gain of electrons.
What is an ion?
A change in color, the production of an unexpected odor, or the sudden formation of a solid precipitate are all clear indicators of this event.
What is a chemical reaction (or chemical change)?
These types of properties describe how a substance interacts with other substances, such as acids.
What are chemical properties?
James Chadwick discovered this subatomic particle, which resides in the nucleus and matches a proton's mass but carries no charge.
What is a neutron?
Found in Group 18, this family of elements is the most stable because all the spaces in their outer electron shells are completely full.
What are the Noble Gases?
To clarify which specific charge is being utilized for an element with multiple active ion charges, this type of numeral is included in its name.
What is a Roman numeral?
This slow chemical change occurs when oxygen in the air reacts with a metal, such as iron turning into rust.
What is corrosion?
Any substance that is dissolved specifically in water is given this special designations' name.
What is an aqueous solution?
Democritus used this Greek word to describe the smallest particles that could not be broken down any further.
What is atomos?
This group of elements represents the single most reactive family of metals on the periodic table.
What are the Alkali Metals?
These small numbers written below the text line in a chemical formula indicate the exact number of atoms of that element present.
What are subscripts?
This vital process takes place in the cells of your body, where glucose reacts with oxygen to produce energy, water, and carbon dioxide.
What is cellular respiration?