What a pure substance that cannot be separated into simpler substances by either chemical or physical means?
An element.
100
What are the three types that the elements on the periodic table can be divided into?
Metals, Nonmetals, Metalloids
100
What is a pure substance composed of two or more elements that are chemically combined?
A compound.
100
What is a combination of two or more substances that are not chemically combined?
A mixture.
100
What type of mixture is a homogeneous mixture in which that appears to be a single substance?
A Solution
200
What is the smallest "piece" of an element that is possible ?
An atom.
200
What type of elements are shiny and good conductors?
Metals
200
Name two physical properties of compounds:
Density, Mass, Volume, Melting Point, Boiling Point, Solubility, etc.
200
What can be used to separate a mixture of iron and aluminum?
A magnet
200
What type of mixture would salt water be considered to be?
A solution
300
Which of these is an element?
A. Nitrogen
B. Water
C. Carbon Dioxide
D. Sugar
300
What type of elements are dull and poor conductors?
Nonmetals
300
Which of the following is a compound?
A. Titanium
B. Boron
C. Hydrogen dioxide
D. Gold
300
What can be used to separate mixtures based on density? Example: blood
A centrifuge
300
What type of mixture has large particles that are more or less evenly dispersed. These particles will settle when the mixture is not shaken or stirred.
A suspension
400
Name 2 physical properties an elements can have:
Density, Mass, Volume, Color, Boiling Point, Melting Point, Solubility, etc.
400
What type of elements are also called semi-conductors?
Metalloids
400
Name one method you can use to break down a compound:
Heat or Electric Current
400
What is used to separate mixtures based on their boiling points?
A. Centrifuge
B. Distillation
400
What type of mixture has intermediately sized particles. Jello and cool whip are examples.
A colloid
500
What is a substance in which there is only one type of particle?
A pure substance.
500
What does it mean to be malleable?
Able to be hammered into thin sheets.
500
What type of organisms can use bacteria to produce protein form nitrogen compounds?
Plants
500
Which of the following is a mixture?
A. Sodium chloride
B. Water
C. Jello
D. Helium
500
What are three types of mixture we discussed in class?