Module 2 Lesson 1
True or False. Most materials can be used in their natural form
What is false?
This term is used to shorten the names of elements and can be defined as an abbreviation of an element.
What are symbols?
Remember, the first letter will always be capitalized, but the second and possibly third letter will be lowercase
There is no cold, just an absence of this.
What is heat?
Remember, heat is not energy. Cold is relative.
This is defined as the smallest component of a compound that still retains the compound’s characteristics.
What is a molecule?
Remember, a compound has gone through a chemical reaction and is composed of 2 or more different types of atoms.
This is defined as the smallest particle of an element that still retains the element’s characteristics.
What is an atom?
This is defined as a process to separate liquids from a mixture through boiling and condensing.
What is distillation?
Remember, the gas cools into liquid droplets through condensation. This is also used to separate homogenous mixtures.
There are this many total elements that have been confirmed and are listed on the periodic table today.
What are 118 elements?
Remember, 92 of them are natural while 26 of them are synthetic.
This state of matter possesses the weakest intermolecular force.
What is gas?
Remember, this is because they have the most energy and move freely within their containers.
Group 1 on the periodic table is referred to as this.
What are alkali metals?
There are this many synthetic elements.
What are 26?
Remember, to be synthetic is to be human created. These elements are created in labs. There are 92 naturally occurring elements
What type of concentration makes alkalis and acids dangerous?
What is high concentration?
Double
Elements will take, give, or share these when bonding.
What are valence electrons?
This is the 4th state of matter.
What is plasma?
There are this many categories of substances on the periodic table.
What are 3?
Metals, nonmetals, and metalloids. Know the defining characteristics of all 3.
Mendeleev's 1st periodic table contained this many elements.
What is 60?
Remember, this table was grouped on similar characteristics and displayed atomic weights.
This is the temperature at which a substance changes from a liquid to a gas.
What is the boiling point?
Know if this is qualitative or quantitative.
The columns on the periodic table are referred to as this term.
What are groups?
Remember that the rows on a periodic table are called periods and there are 7. There are 18 groups.
Particles are always doing this.
What is moving?
Remember, as particles gain energy, they will move faster. As they lose energy, they will move slower.
This term measures the average amount of kinetic energy within a substance.
What is temperature?
Remember, thermal energy measures the TOTAL amount of kinetic energy within a substance.
This is another name for a homogenous mixture.
What is a solution?
True or false. A substance cannot be separated.
What is true?
A substance is the most basic form of matter and can be defined as uniform matter with a unique set of properties. Substances are pure so they cannot be separated past their atomic level.
Most nonmetals are in this state of matter naturally.
What is gaseous?
Remember, metals are generally solids while metalloids split metals and nonmetals on the periodic table and have a blend of their properties; their state varies by substance.
This is the term for the resistance to flow; how well an object does or does not flow.
What is viscosity?
This physical separation technique relies on a semi-permeable membrane to filter particles by both size and type.
What is reverse osmosis?
DOUBLE
This is the difference between a theory and a law.
A theory is an explanation based on knowledge gained from many observations and
investigations. A law is a statement about what happens in nature that
seems to be true all the time.
Theory is what we THINK is happening, a law is what we KNOW is happening.