Atomic Structure
This subatomic particle has a positive charge and is found in the nucleus.
Proton
The vertical columns on the Periodic Table are known by this name.
Group or Family
This is the process of a gas changing directly into a liquid.
Condensation
This is a physical combination of two or more substances that are not chemically bonded.
Mixture
This pH value indicates a perfectly neutral substance, like pure water.
7
This is the maximum number of electrons that can fit in the first energy level of a Bohr model.
2
These elements are found in Group 18 and are known for being chemically stable.
Nobel Gasses
This term describes dry ice turning directly from a solid to a gas without becoming a liquid.
Sublimation
Adding more solvent to a beaker without adding more solute makes a solution...
Dilute
These are the specific ions produced when an acid is placed in water.
H+ - Hydrogen Ions
To find the number of neutrons, you subtract the atomic number from this value.
Atomic Mass
The horizontal rows on the Periodic Table provide this specific information about an atom's structure.
Number of energy levels
When a liquid changes into a solid, this happens to the kinetic energy of its molecules.
The energy decreases.
This type of mixture is one where you can see the different parts, like a salad.
Heterogenous
If you add a base to a liquid with a pH of 4, the pH will do this.
Increase towards neutral. (Neutralization reaction)
An atom with an atomic mass of 31 and an atomic number of 15 has this many neutrons.
16
The vertical columns in the periodic table for some groups provide what specific information about an atom's structure?
Total number of Valence electrons.
During boiling, the temperature of a substance stays constant for this reason.
The energy is being used to break bonds and change to the next phase.
This term describes a solution holding the maximum amount of solute possible at a given temperature
Saturated
This pH range would indicate that a substance is a strong base.
12-14
An element with 2 electrons in the first level and 4 in the second level is identified as this.
Carbon
This is the term for the electrons located in the outermost shell of an atom.
Valence electrons
This is the best evidence that a chemical change, rather than a physical one, has occurred.
A new substance is formed.
This is why Carbon Dioxide (CO₂) is classified as a compound rather than a mixture.
The elements are chemically combined in a fixed ratio.
This is one specific test a student could perform to determine if a clear liquid is an acid or a base.
Use pH paper or an indicator solution.