Chemical Reactions Flashcards
The substances that start a chemical reaction are called _____.
reactant
Which statement(s) is/are TRUE for all chemical reactions?
a
Energy is released when bonds are formed.
b
Energy is absorbed when bonds are broken.
d
Reactant elements and/or compounds rearrange to form chemically new products.
The substances produced in a chemical reaction are called _____.
product
The process of burning a fossil fuel to release energy is called _____.
combustion
Complete the sentence by using word chemical, physical, statistical or physiological.
A ____ reaction is a process in which some substances change to other substances as chemical bonds break and reform.
chemical
Which statement best describes what occurs during a chemical reaction?
The bonds in reactants break so that elements can rearrange and form new products.
Which of the following represents a synthesis reaction?
2H2 + 02 → 2H20
Which chemical equation represents a double replacement reaction?
AgNO3 + NaCl → AgCl + NaNO3
Which type of reaction is represented by the following chemical equation?
CH4+2O2→CO2+2H2O
combustion reaction
Complete the sentence using one of the following words light, energy, or radiation.
Besides matter, all chemical reactions require _____ in order for the reaction to occur.
energy
