Definitions
A pure substance that cannot be separated into simpler substances by physical or chemical means.
What is an element?
A mixture in which particles are dispersed through a liquid or gas but are large enough to settle out.
What is a suspension.
Give an example of a solution.
What are many possible answers.
You have an element that is shiny, conducts electricity well, and is very malleable. You categorize it as a ____________.
What is a metal.
Give two ways to separate a mixture.
What are distillation, magnetism, spinning in a centrifuge (density), and filtration.
A combination of two or more substances that are not chemically combined.
What is a mixture?
A mixture in which insoluble particles are dispersed through a liquid but are not large enough to settle out.
What is a colloid.
Give an example of a colloid.
What is jell-o, mayonaise, whipped cream, paint, blood.
You have an element that is brittle and a poor conductor of heat and electricity. You would likely categorize it as a ______________.
What is a non-metal.
Give two ways to separate a compound.
What are heat, electricity, reacting with acid.
A pure substance composed of two or more elements that are chemically joined.
What is a compound?
A mixture that has the same appearance and properties throughout is called ___________________, while a mixture in which the different components can easily be seen is called _______________.
Give an example of a suspension.
What is muddy water, italian dressing, dust in air.
A substance cannot be separated into different substances by heat or a centerfuge (density) but can be by burning it or treating it with acid. It is an element, compound, or mixture.
What is a compound.
What is the formula for calculating the concentration of a solution?
What is (Solute units/solvent units)?
A substance in which there is only one type of particle.
What is a pure substance?
A ______________ is a mixture that appears to be a single substance composed of the __________ which is dissolved in the ______________.
What is solution, solute, solvent.
For most substances, as the temperature increases, the solubility ___________.
What is increases?
A substance that cannot be broken down by physical or chemical means.
What is an element?
What is the term for a solid dissolved in a solid?
Elements are grouped into categories based on their ________________.
What are properties?
A measure of the amount of solute dissolved in a solvent is __________________. The maximum amount of a solute that can be dissolved in a solvent at a particular temperature is that solute's ________________.
What is concentration and solubility.
A substance can be split into multiple substances by heating it. Is it an element, compound, or mixture?
What is mixture?
You have samples of two metals and a well-equipped lab. What three things might you check to tell what each is?
What is density, conductivity, reactivity, melting point.
This sort of reaction would break down an element.
What is a nuclear reaction?