WorksheetsMatter Wrap Up Review
Total questions: 35
Worksheet time: 18mins
What is needed for a chemical reaction to occur are called the ____________________.
reactants
products
In a closed system, matter is not created or destroyed during a chemical reaction or physical change.
Matter can only be lost in a chemical reaction.
Matter can only be gained in a chemical reaction.
Matter can be gained and lost in a chemical reaction.
2H2 + O2 --> 2H2O
What do we call the substance that are produced as the result of a chemical reaction?
Reactants
Products
True/False: Photosynthesis is an example of a physical reaction.
True
False
True/False: Chemical changes result in a new substance or new substances being produced.
True
False
___________________, the small subunits that combine to make a large polymer.
Prototype
Monomer
Mixture
Polymer
True/False: After a chemical reaction in a closed system the mass of substances will change.
True
False
True/False: Matter can be neither created or destroyed.
True
Fase
A __________________is a large molecule made up of many smaller subunits.
polymer
monomer
enzyme
prototype
Which of the following in an indicator that a chemical reaction has occurred?
Changes in mass
Changes in order
Production of a gas
Additive color change
When eggs decompose they produce hydrogen sulfide which smells like rotting eggs. This is an example of what chemical indicator?
Non-additive color change
Changes in odor
Changes in density
Production of a solid
Lighting a match is an example of what chemical reaction indicator?
Changes in odor
Changes in density
Changes in reactivity
Changes in characteristic properties.
True/False: If you notice the production or absorption of thermal energy (changes in temperature) a chemical reaction has definetly taken place.
True
False
In this type of chemical reaction you have A+B, after the chemical reaction you have AB.
Synthesis
Decomposition
Single replacement/displacement
Double replacement/displacement
True/False: Sodium Chloride (NaCl) results from a single replacement reaction.
True
False
In this type of chemical reaction you have AB and after the chemical reaction you have A+B
Synthesis
Decomposition
Single replacement/displacement
Double replacement/displacement
In this type of chemical reaction it starts with AB + CD and after the chemical reaction may result in AD+BC
Synthesis
Decomposition
Single replacement/displacement
Double replacement/displacement
True/False: Fireworks result from a chemical reaction. An indicator is the production of light.
True
False
A substance that is formed as the result of a chemical reaction is a __________________
Product
Reactant
Starters
Enders
What is the BEST definition of a chemical reaction?
A change in matter that produces one or more NEW substances
When two things combine and EXPLODE.
How are plasma and gas different?
Plasma has a definite shape, but gas does not.
Gas is hotter than plasma.
Electrons separate from atoms in plasma and plasma is hotter.
Gas has a definite volume, but plasma does not.
The type of matter with the lowest heat energy and temperature.
gas
solid
liquid
plasma
