Chemical vs Physical
Ice melting is a form of this type of change.
What is a physical change?
These two subatomic particles are located in the nucleus of an atom.
What are protons and neutrons?
This word means "the ability to be shaped into wire."
There are this many elements in this chemical formula:
KMnO4
What is 6?
This is the term for the columns on the periodic table, and it shows that those elements have similar chemical properties.
What are groups or families?
Another name for a state of matter change, such as a solid becoming a liquid.
What is a phase change?
This subatomic particle has a negative charge and does not contribute to an atom's mass.
What is an electron?
This category of elements is typically ductile, shiny (lustrous) malleable, good conductors, and found on the left side of the periodic table.
What are metals?
A compound is made up of this many different atoms.
What is two or more?
This is the name of the electrons in the outermost orbital of an atom.
What are valence electrons?
Food being digested in your digestive tract is an example of this type of reaction.
What is a chemical reaction?
Silicon has 14 protons and 14 neutrons, so this is its atomic mass.
What is 28?
Most metals are this at room temperature.
What is solid?
The "2" in this formula is called this.
2CO4
What is a coefficient?
This is the scientific term for the type of evidence that a chemical reaction occurs when you throw sodium (Na) into water (or flush it down the toilet!).
What is combustion?
Name four types of evidence of a chemical change.
What is:
-bubbling or fizzing
-unexpected color change
-precipitate is formed
-combustion (giving off heat/light!)
This is the name of the place the electrons are located in an atom.
What are orbitals or shells or electron cloud?
An element that has properties of both metals and non-metals is called this.
What is a metalloid?
This is the number of confirmed elements on the periodic table.
What is 118?
This is the definition of a chemical change.
When two or more substances join to form new substances with new chemical properties.
The elements in the periodic table are ordered by this number, which usually appears at above the element's symbol;
What is the atomic number?
This word describes metalloids, and it means they can sometimes allow electricity to pass through and sometimes they do not.
What is a semi-conductor?
This is the term for the molecules present BEFORE a chemical reaction takes place.
What is reactant?
This is the symbol for the element antimony.
What is Sb?