Intro to Chemistry Semester Test Review

In the group name (1A, 2A, 3A, etc...) the coefficient equals what?

On the periodic table, there are two numbers for Krypton, Kr:36 and 83.80. What do each of these numbers represent?

The elements organization in the periodic table can best be described by the order ______.

Another name for the elements in Group 8A is the ____.

The phase change that is the opposite of vaporization is.

When Mendeleev organized elements in order of increasing mass, elements with similar properties were in the same ____.

If there are two long dashes between two atoms in a structual formula, molecules of the compound contain a(an) ___ bond.

A(An) ________ is a statement that summarizes a pattern found in nature.

The molar mass of a diatomic molecule of oxygen is what?

The elements in which group are the most reactive?

A _____ makes it easier to understand things that are too small, too large, or too hard to observe directly.

The _____ is the region in which an electron is most likely to be found.

How many grams of Na are in 4.0 mol of the element?

The phase that is opposite of freezing is.

In what conditions does plasma exist?

The compound whose formula is SO3 is called

A ______ has a definit volume and no definite shape.

The SI base unit of mass is the ____.

An organized plan for gathering, organizing, and communicating information is called a(an) _____.

The atomic mass unit (amu) is defined as one-twelfth the mass of a(an) ______-12 atom.

If energy is released in a chemical reaction, the reaction is ______.

According to Charles' Law, the temperature that is called absolute zero is.

A(An) ________ explains a pattern found in nature.

In an electron dot diagram, each dot represents a(an) ______.

Measuring how quickly a reactant disappears is one way to measure the _____ of the reaction.

An ion with a positive charge is called a(an) _____.

Another name for the elements in Group 1A is the ____.

An ion with a negative charge is called a(an) ___.

A sample of H2O contains 112 g of the compound. How many moles of H2O is contained in the sample?

The ions in solid sodium chloride are arranged in a structure called a(an) _____.

If an atom has 34 protons and 36 neutrons, the mass number is.

The results of Rutherford's gold foil experiment showed that the _ occupies a very small amount of the space in an atom.

During a(an) ______ change, the system releases energy to its surroundings.

______ are found in the nucleus.

What is always present in a combustion reaction?

What kind of change is taking place if you see white mold growing in a strawberry?

The phase change that is opposite of sublimation is?

A _____ is a way of organizing data that is used to show changes that occur in related variables

_____ is the closeness of a measurement to the actual value being measured.

In ionic compounds, the sum of the charges of all the cations and anions must be _____.

What subatomic particle did J.J. Thomson discover?

In an experiment, 0.016 seconds equals ______ milliseconds?

At sea level, water boils at _______ degrees Celsius.

The elements are arranged in the periodic table by their _____.

A material's ability to burn in the presence of oxygen is _______.

A _____ has no definite volume and no definite shape.

A _____ has a definite volume and a definite shape.

If a spoon gets hot quickly when it is used to stir a pot of soup, it is probably made of _____.

In what conditions does Bose-Einstein condensate exist?

According to ______, all matter was made up of four elements: earth, air, fire, and water.

Another name for the elements in Group 2A is the _____.

When a metal changes color because it has reacted with another substance, a(an) ______ change occured.

Which of the following is NOT a clue that a chemical change has taken place?

What are two atoms of the same element that have different mass numbers called?

Computers are an example of ______ that helps people solve problems.

In scientific notation, (7.9 x 10^4) x (3.6 x 10^2) equals _____.

A solid that forms and separates from a liquid mixture is a(an) ______.

If element Q has 15 protons, its atomic number is.

Which of the following is NOT a pure substance?

Every element wants to _____.

If energy is absorbed in order to start a chemical reaction, the reaction is _____.

If an atom has a mass number of 31 and 16 neutrons in its nucleus, what is the atomic number of the element?

Another name for the elements in Group 7A is the ____.

Which of the following is a heterogeneous mixture?

A measurement must include both a number and a(an) _____.

The three values- 11.512 m, 12.983 m, and 13.764 m- have the same number of ______.

When a metal changes color because it has been heated, a(an) _____ change occured.