Chemical Reactions
A chemical reaction where carbon dioxide and water combine to form new substances.
What is photosynthesis?
Ca + 2HCl ---> CaCl2 + H2
What is single replacement?
In a chemical formula/equation, the subscript represents?
What are the amount of atoms?
A rusting bicycle
What is chemical change?
A process in which atoms of one or more substances rearrange to form one or more new substances.
What is a chemical reaction?
Occurs when iron combines with oxygen in a moist environment due to a chemical reaction.
What is rust formation?
2Na + Cl2 ---> 2NaCl
What is synthesis reaction?
In a chemical formula/equation, a coefficient represents?
What are the number of molecules?
Frying an egg
What is a chemical change?
In a chemical equation, the substance to the right of the arrow.
What is a product?
An observation recorded during a chemical reaction.
What are characteristics of a chemical change?
Oxygen is one of the reactants and carbon dioxide is one of the products.
What is combustion reaction?
The small numbers after the element’s name.
What are subscripts?
Mowing the lawn
What is a physical change?
Chemical reactions use ____________ to break bonds and form new bonds between atoms.
What is energy?
When n acid and a base react to form water and a salt.
What is neutralization reaction?
AB -----> A + B
Decomposition Reaction
The large numbers before an element's symbol.
What are coefficients?
Hammering wood together to build a fence.
What is a physical change?
AB + CD → AC + BD
What is double replacement reaction?
A change in properties and/or a change in energy.
What are signs of a chemical reaction?
What is addition?
Burning leaves
What is a chemical change?
What is a reactant?