Vocabulary
A solid that forms from liquids during a chemical reaction
What is a precipitate?
When you cut a piece of paper, it is an example of this type of change
What is a physical change?
Substance that undergoes a change in a chemical reaction
What is a reactant?
This type of mixture has an uneven distribution of components that can be seen and separated easily
What is a heterogeneous mixture?
A characteristic of a substance that can be observed without changing the substance into another substance
What is physical property?
This is how we knew that baking soda and vinegar were reacting (it is why the reaction bubbles over)
What is production of a gas?
(Bonus point: What type of gas was produced?)
Burning a candle on a cupcake is an example of this type of change (to the candle wick)
What is a chemical change?
Substance that results from a chemical reaction
What is a product?
This type of mixture has evenly distributed components that are difficult to see and separate out (it is often a liquid)
What is a homogeneous mixture?
Properties that describe the ability of a substance to change into another substance
What is a chemical change?
The energy is usually released as heat in this reaction (the reaction feels hot or warm)
What is exothermic reaction?
Crushing an aluminum can is an example of this type of change
What is physical change?
A subscript in a chemical formula (like in H2O) tells us this
Saltwater is a common type of solution. In this solution, this substance is the solute
What is salt?
A characteristic of a substance that describes its ability to CHANGE into another substance
What is a chemical property?
When energy is absorbed, it causes its surroundings to become cooler (the reaction feels cold)
What is endothermic reaction?
When exposed to air, an iron chain will begin to rust. This is an example of a
What is chemical change?
True or false: The amount of mass in a chemical reaction changes when the reaction is in an open system.
What is false?
Saltwater is a common type of solution. In this solution, this substance is the solvent
What is water?
Substances that undergo chemical change
What is a reactant?
This is what catalysts and inhibitors change to speed up or slow down a chemical reaction
What is activation energy?
When ice melts, it is an example of this type of change
What is physical change?
This type of reaction occurs when two elements or compounds combine to form a new, more complex compound
What is a synthesis reaction?
This type of heterogeneous mixture has components that are difficult to separate out but are still large enough that light bounces off of them (like ice cream or smoke)
What is a colloid?