Chemistry Flashcards
What is a displacement reaction?
Where a more reactive element replaces a less reactive element.
What is an independent variable?
The controlled part of the investigation
What is the dependent variable?
the variable being tested or measured
What is liquid to a solid?
Freezing
What is solid to liquid?
Melting
what is Solid to a gas?
Sublimation
What is gas to solid?
Reposition
What is gas to a liquid
Condensation
What is liquid to a gas?
Boiling/ Evaporation
What is endothermic?
Where an object absorbs energy
What is exothermic?
Where a thing releases energy
What is an atom?
Smallest possible particle
What is an molecule
Two or more atoms bonded together
What is a element?
A chemical containing only one atom
What is a compound?
a mix that is composed of two or more separate elements
What is a mixture?
a mix of different elements which the elements are individual.
What is a solvent?
the substance in which a solute dissolves to produce a homogeneous mixture.
What is a soluble?
a substance that is able to be dissolved, especially in water.
What is a insoluble?
a substance (solid) that will not dissolve in a solvent even after mixing
What is a solute?
the substance that dissolves in a solvent to produce a homogeneous mixture
What is the test for hydrogen?
The squeaky pop test
What % of the air is nitrogen?
78%
What % of the air is oxygen?
21%
What % of the air is Carbon dioxide?
.04%
