Vocabulary
What is a change in matter that results in new substances being formed?
A Chemical Change
What is an example of a physical change?
Answers will vary
What is a reaction in which energy is absorbed?
Endothermic Reaction
Folding a paper in half is an example of what kind of change?
A physical change
What is another term for a chemical change?
Chemical Reaction
What is an example of a chemical change?
Answers will vary
What is an exothermic reaction?
*hint: what happens to the energy?
Energy is released or given off in an exothermic reaction
What type of mixture is made up of materials that are distributed unevenly?
Heterogeneous mixture
If bonds between particles of reactants have been broken and reformed what kind of reaction has taken place?
Chemical Reaction
What is a reactant?
A reactant is the matter that you start with in a chemical reaction
What are 3 signs that a Chemical Reaction has occurred?
bubbles
changes in color
changes in state
changes in temperature
odor
energy is added or released
What is an example of a Endothermic Reaction?
Examples will vary
What type of mixture is formed when lemonade dry mix and water are combined?
A Solution
What type of reaction is photosynthesis an example of?
because energy from the sun is absorbed by the plant
What is the newly formed matter in a chemical change called?
Product
What happens to the bonds in a chemical reaction?
The bonds in a chemical reaction are broken and new bonds are formed.
What is an example of an Exothermic reaction?
Examples will vary
In a solution, what is the substance being dissolved called?
Solute
In a chemical change, what happens to the amount of matter after the reaction takes place?
It is conserved. Meaning it is neither created or destroyed.
What is the difference between a mixture and a solution?
Both are a combination of two or more substances. A mixture does not chemically combine. A solution does chemically combine at the molecular level.
What are the products and reactants in the chemical change of making cookies?
Reactants: flour, eggs, sugar, chocolate chips, butter, ect.
Product: Chocolate Chip Cookies
What is forms of energy that is released are released during an exothermic reaction?
Light, heat, or sound
In a solution, what is the substance that is dissolved called?
Solvent
What is Conservation of Matter?
No matter what kind of reaction takes place, the amount of matter stays the same.
Matter is neither created or destroyed