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Terms in this set (100)
what are the step-by-step procedures of a scientific problem solving called?
what s a testable prediction in an experiment called?
what is the first step taken when designing an experiment?
state the problem
what so you call an explanation of an observation?
what is changed in an experiment to try to change the dependent variable?
what is the last step in an experiment?
why should an experiment be repeated?
to reduce the chance of errors
what is the SI unit for mass?
what would you use measure the length of a table?
what is the SI unit for measuring volume?
what would you use to measure temperature?
what is anything that has mass and takes up space?
who discovered that atoms had a nucleus?
Energy levels of atoms are occupied by?
In___, the atomic number decreases by two
Carbon has an atomic number of 6. If Carbon's mass is 14, how many neutrons are there?
If an atom had 3 electrons, 3 protons, and 7 neutrons, what would be the atom's mass number?
Na(+), what does this symbol tell us?
its a positive ion
who was the first person to create the idea of the periodic table?
The modern day periodic table is arranged according to what?
what does the atomic number of an element mean?
the number of protons in the nucleus
who arranged the periodic table as we know it today?
the majority of the elements on the periodic table are?
luster is the ability to?
ow many groups can be found on the modern day periodic table?
how many periods are on the modern day periodic table?
between the metals and nonmetals are the?
what type of element best conducts electricity?
what type of element makes the best insulator?
a semiconductor is usually made from?
the elements in group 1 are referred to as?
all elements in group 1 are metals with exception of?
What is the name given to the elements of group 2?
Alkaline earth metals
What are the elements in groups 3-12 called?
What are elements that have no metallic properties called?
What is the most common element in the world?
What are the elements in group 17 called?
What are the elements in group 18 called?
What type of radioactive decay DOES NOT change an element into another element?
who was NOT a developer of an atomic model?
the first periodic table was arranged according to what?
what is the element name for H?
what is the element name for He?
what is the element name for K?
what is the element name for Na?
what is the element name fro Fe?
what is the element name for O?
what is the element name for Kr?
what is the element name for Zn?
what is the element name for S?
what is the element name for Hg?
what is the element name for Ne?
what is the element name for Ni?
what is the maximum number of electrons in the second energy level?
aluminum oxide is a chemical formula with 2 Al and 3 O. How is this formula written?
how many dots are in the electron dot diagram for carbon, in group 14?
in the compound H2O, how many atoms are there altogether?
in the compound, C13H16N2O5, which element has the greatest number of electrons represented?
All of the elements in group 18 are in what state of matter?
What is a charged atom that has gained one or more electrons called?
What type of bond is formed when a positive ion and a negative ion join together?
What is a substance that contains two or more elements called?
A bond in which electrons are shared is called a __ bond?
What is the main diet of the coral?
What do corals need so that the zooxanthellae can conduct photosynthesis?
Corals use their___ to capture food?
What types of mangroves can tolerate the seawater the best?
In a shark's anatomy, what is the largest internal organ?
What kingdom do corals belong to?
What are the two types of coral generally seen in the Florida keys?
hard and soft
A neutral solution has a ph of?
Which is an example of a substance? air, lemonade, soil, water?
Which is an example of a mixture? Air, water, gold, carbon dioxide?
Which of the following items is a base? vinegar, soap, orange juice
Which item is an acid? Antacid, water, lemons
Evaporation, a physical change, could be used to separate the components of a?
give 3 examples of a heterogeneous mixture
fruit salad, pizza, cereal and milk
give 3 examples of a homogeneous mixture
lemonade, air, milk
the more hydronium ions in a substance the more _____ the substance is.
a substance with a pH of 8 or higher is considered a?
a substance with a pH of 5 is stronger than a substance with a pH of 2? true or false
the more hydroxide ions a substance has than hydronium ions, the more ____ the substance is.
gold, silver and iron are considered?
water, carbon dioxide and sodium chloride are considered?
substances with pH 1 can?
cause severe burns
substances with pH 5 can?
substances with a pH 8 are generally used for?
lemonade is categorized as a ____ or?
solutions, homogeneous mixture
list 3 materials that would make good insulators
wood, plastic, and glass
list 3 materials that would make good conductors
most metals, copper, and aluminum
the unit of measure for pressure is?
Fluids form layers based on their?
Achimedes' principle addresses?
Which substance can occupy different volumes, depending on the container?
The force that opposes the motion of an object through a fluid is a called?
The unit of measure for force is?
As a diver goes deeper into the ocean, what happens to the buoyant force?
there is no change
Which principle describes: the pressure of a fluid decreases when the speed of that fluid increases?
What increases as elevation decreases on Earth's surface?
a book is dropped on a closed bottle of ketchup. what principle is being applied?
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