Factors Affecting Reaction Rates
an enzyme is found in living things
What is a type of catalyst found in living things?
Number of protons in nucleus of atom.
What is the atomic number of an element?
Smallest particle into which an element can be divided and still be the same element.
What is an atom?
They are written below and to the right of chemical symbols.
Where are subscripts written in chemical symbols?
Chemicals
What is everything made up of?
The higher the temperature, the faster rate of reaction.
How does temperature affect the rate of a reaction?
Vertical column of elements.
What is a group/family on the periodic table?
The electric charge is neutral; it has no electric charge.
What is the electric charge of a neutron?
Matter is neither created nor destroyed in ordinary physical and chemical changes.
What does the law of conservation of mass state?
Chemical bonds hold chemicals together.
What holds chemicals together?
How does concentration affect the rate of a reaction?
It is called a period.
What is a horizontal row of elements called?
It is formed by protons and neutrons.
What particles make up the nucleus in an atom?
They balance a chemical equation.
What do coefficients do in a chemical equation?
Hydrogen and Oxygen make up this compound.
What two elements are in water (H2O)?
Greater surface area= higher reaction rate
How does surface area affect the rate of a reaction?
These electrons are involved in chemical bonding and symbolize the outermost portion of the electron cloud in the atom.
What do valence electrons participate in?
The charge is positive.
What is the charge of a proton?
Energy is released to the surroundings.
What happens to energy in an exothermic reaction?
A new chemical called sodium chloride is produced.
What happens when you chemically combine chlorine and sodium?
They bring together reactants and increase the reaction rate.
How do catalysts help increase the reaction rate?
It symbolizes the separation of metals and nonmetals on the periodic table.
What does the zigzag line symbolize on the periodic table?
Atoms of same element with different numbers of neutrons.
What are isotopes?
Burning a candle is an example of this reaction.
What is an example of an exothermic reaction?
Elements: Carbon, Hydrogen, Oxygen
Number of atoms:
6 Carbon atoms
12 Hydrogen atoms
6 Oxygen atoms
What elements are present in C6H12O6 (glucose) and how many atoms of each element are present in a glucose molecule?