Understanding physical and chemical properties. Flashcards
(17 cards)
What are properties?
Characteristics that describe how substances behave.
Properties can be physical or chemical.
What are physical properties?
Properties that can be observes with making a new substance.
It can be a quantitative or qualitative observation.
For example, color, lustre, smell, ductility, ext.
What is ductility and is it a physical or chemical property?
The ability to be stretched into a thin wire without breaking. It is a phyisical property.
What is qualitative information?
Information that is described with words instead of numbers.
What is quantitative information?
Information that is described with numbers.
What is solubility?
The ability for a solute to dissolve in a solvent.
What is a solvent?
The substance the solute dissolves in.
What is a solute?
A substance that dissolves in another.
Example; salt is the solute in a mixture with water and salt.
What is a simple solution?
A mixture of two substances in which the solute fully dissolves in the solvent.
Some particles won’t mix together because there is no attraction between the particles.
True or false?
True. An example of this is oil and water.
Particles that are attracted to each other won’t bond (the solute won’t dissolve in the solvent).
True or False?
False. Think of salt and water.
What is a saturated solution?
A solution with as much solute as can dissolve, no more, no less.
What is an unsaturated solution?
A solution with less solute than the solvent can dissolve.
A solute will NOT dissolve quicker in a solvent if there is a higher temperature.
True or false? Explain why?
False. Remember in the particles theory heat makes particles move faster, so the solute will distribute itself faster.
What is density?
A measure that compares mass to the volume of a substance.
The formula is as follows…
Density = Mass / Volume
Particles that are closer together have a higher density.
True or False?
True.
What is a chemical property?
Properties that can be observed by changing the substance.
For example: flammability - you need to add fire to the substance to determine if it’s flammable.
