Chemistry Basics
Observing Matter
Combining Matter
Changing Matter
Scientific Method
100
Anything that takes up space.
What is matter?
100
"The liquid is white and bubbly" is this type of observation.
What is a qualitative observation?
100
This type of combination of elements or compounds can be separated by physical means such as distillation, magnets, or filters.
What is a mixture?
100
An observable change that doesn't change the identity of a substance.
What is a physical change?
100
This variable is changed by the scientists performing an experiment.
What is the independent variable.
200
A measure of how much matter an object has.
What is mass?
200
A type of property that can be observed only by changing the identity of an object.
What is a chemical property?
200
The parts of this type of mixture are not evenly distributed.
What is a heterogeneous mixture?
200
A solid block of dry ice (CO2) vaporizes into CO2 gas, which is an example of this type of change.
What is a physical change.
200
In an experiment, this does not have the independent variable and is used to compare the test results.
What is a control?
300
Anything that has a chemical bond.
What is a molecule.
300
This specific type of physical property changes depending on how much there is.
What is an extensive physical property?
300
In a homogeneous solution, this part of the solution is present in greater amount.
What is the solvent?
300
Two elements are combined in a beaker, and you feel the beaker become cool to the touch, which must be this type of reaction.
What is an Endothermic reaction?
300
This variable is the effect of an experiment that is being analyzed.
What is the dependent variable?
400
These types of molecules are made of different types of elements.
What are compounds?
400
The ability to dissolve in water is an example of this type of property.
What is a physical property? Bonus pts: Intensive or Extensive?
400
A pure substance can only be separated this way.
What is a chemical reaction?
400
This type of change occurs when you drop an antacid in a glass of water.
What is a chemical change?
400
This step comes after the experiment step of the scientific method.
What is analyze data?
500
This type of substance has an equal ratio of elements.
What is a pure substance?
500
A chemical change that gives off heat energy is this type of reaction.
What is an exothermic reaction?
500
Carbon Dioxide in the air is this part of the solution.
What is the solute?
500
This type of change happens when you dissolve sugar into hot tea.
What is a physical change?
500
This is the purpose of a scientific experiment.
What is to test a hypothesis?
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