What is the definition of chemical reaction?
A chemical reaction includes the production of a gas,bubbling, a change in temperature,the production of a precipitate,or a color change.
Where are protons located and what is their charge?
Protons are located in the nucleus and are positively charged.
What is a reactant?
A reactant is the substance at the beginning of a substance.
What are three characteristics of an non-metal?
1.Not Shiny
2.Not Ductile
3.May be Solid,liquid,or gas
What is the definition of mass?
Mass is neither created nor destroyed in a chemical reaction.
What is a subscript used for?
A subscript is used to show the number of hydrogen atoms.
Where is the neutrons located and what is the charge?
Neutrons are found in the nucleus and have no charge.
What is a product?
A product is the substance that is produced by the chemical reaction.
What is an chemical formula also called?
Chemical formulas, are also called molecular formulas which are used to represent the chemical make-up of a particular molecule.
What is Balanced chemical equations
You will always have the same mass before the reaction as you do after the reaction.
What do chemical equations describe?
Chemical equations describe the reaction using a formula.
Where is the electrons located and what is the charge?
Electrons are located in the electron cloud outside of the nucleus and are negatively charged.
What is the definition of a chemical change?
Chemical properties are properties that can only be observed when substances undergo a change in identity.
How is the periodic table set up?
The periodic table is made up of groups and periods.
What is a coefficient?
A coefficient shows how many molecules of an substance are involved in the reaction.
What was Bohr's contribution to our understanding of atomic structure?
Orbiting electrons
Energy Level
How do you know when a chemical change is formed?
2.Reactivity
3.Basicity
Where is metal located on the periodic table?
A metal is located on the left side of the bold stair step on the periodic table.
When can you be told a physical change has formed?
1.Shape
2.Odor
3.Color
4.Density
What is a valence electron?
A valence electron are the electrons in the outer shell that bond with other atoms.
What does chemical reaction consist of?
The reactants combine to form a new product.
What are the characteristics of metalloids?
Metalloids have properties of both metals and nonmetals.Some have good conductors in electronic devices like silicon.