Ch 4 Finals Review Flashcards
Ch 4.1
A pure substance that cannot be separated into simpler substances by physical or chemical means is called an?
Element
Ch 4.1
A substance that contains only one type of particle is a?
Pure Substance
Ch 4.1
The amount of an element present does not affect the element’s what?
Properties
Ch 4.1
All elements can be classified as metals, metalloids, or what?
Non-Metals
Ch 4.1
An element that is shiny and that conducts heat and electric current well is a?
Metal
Ch 4.1
An element that conducts heat and electric current poorly, and can be a solid, liquid, or gas is a?
Non-Metal
Ch 4.1
Elements that have properties of both metals and no metals are called?
Metalloids
Ch 4.2
Which of the following is NOT true about compounds?
a. The mass ratio of specific compound is always the same
b. Compounds random combinations of elements
c. Different mass ratios mean different compounds
C
Ch 4.2
When two or more elements are joined by chemical bonds to form a new pure substance, we call that new substance is called a?
Compound
Ch 4.2
True or False, each compound has its own physical properties.
True
Ch 4.2
The only way to break down a compound is through a ____________ change.
Chemical
Ch 4.3
A pizza is a?
Mixture
Ch 4.3
A combination of two or more substances that are not chemically combined is a?
Mixture
Ch 4.3
When two or more materials combine chemically, they form a?
Compound
Ch 4.3
What process can you use to separate crude oil?
a. distillation
b. magnet
c. centrifuge
a. distillation
Ch 4.3
What process can you use to separate parts of blood?
a. magnet
b. centrifuge
c. filter
b. centrifuge
Ch 4.3
What process do you use to separate an aluminum + iron mix?
a. magnet
b. distillation
c. filter
a. magnet
Ch 4.3
What process can you use to separate a sulfur + salt mix?
a. magnet
b. centrifuge
c. filter
c. filter
Ch 4.3
The process in which particles of substances separate and spread evenly through a mixture is known as?
Dissolving
Ch 4.3
In a solution, the _________ is the substance that is dissolved, and the _________ is the substance in which it is dissolved.
Solute; solvent
Ch 4.3
Salt is ________ in water because it dissolves in water.
Soluble
Ch 4.3
When two bases or two liquids form a solution, the substance that is present in the largest amount is the ________.
Solvent
Ch 4.3
A solid solution of metals or non,teals dissolved in metals is a?
Alloy
Ch 4.3
What can particles in solution NOT do because they are so small?
They can never settle out
Ch 4.3
The ability of a solute to dissolve in a solvent at a certain temperature and pressure is called?
Solubility
Ch 4.3
True or False, particles in a suspension are soluble?
False
Ch 4.3
Why are the particles in a snow globe considered a suspension?
Because they will eventually settle out
Ch 4.3
What do gelatin, milk, and stick deodorant have in common?
They are all colloids and, particles are relatively small and fairly well mixed
Ch 4.3
A mixture of two or more uniformly dispersed substances is called?
A solution
Ch 4.3
A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas is called?
A suspension
Ch 4.3
A mixture of particles that are large enough to scatter light but are not heavy enough to settle out is called?
A colloid
