Unit 3 Review

The substance you start with in a chemical reaction are called the

The atomic number of an element is based on the

Conservation of mass in chemical reactions means

Which particles in elements have a no charge?

In a chemical equation the substances on the left side are the

Water is a compound with the chemical formula H2O. What does the "2" tell you?

Force of attraction that holds atoms together

One example of a physical change is

Bases taste bitter, feels slippery, and turn red litmus blue. An example would be

Mendeleev created the first periodic table by arranging elements in order of

H2O is a

Which group of elements have some properties of metals and some of non-metals?

Chemistry is

All of the following are pure substances except

Which particles in elements have a positive charge?

An ionic bond is the attraction between

Bases taste bitter, feels slippery, and turn red litmus blue. An example would be

A change that produces one or more new substances is called a

Acids tastes sour, and turn blue litmus paper red. An example of an acid would be

An atom or groups of atoms that has an electric charge

One example of a chemical change is

Which of these statements about a column of the periodic table is true?

A shorter, easier way to show a chemical reaction, using symbols is called

Mendeleev created the first periodic table by arranging elements in order of

Which group contains the most elements?

Which particles in elements have a no charge?

All of the following are examples of physical properties except

In a chemical equation the substances on the left side are the

The modern periodic table is organized according to

The horizontal rows in the periodic table are known as

Which of the following is an example of a heterogeneous mixture?

From an element's location in the periodic table, you can predict

A change that produces one or more new substances is called a

An atom or groups of atoms that has an electric charge

Which particles in elements have a negative charge?

Which particles in elements have a negative charge?

A change that produces one or more new substances is called a

An atom or groups of atoms that has an electric charge

Non metals can be found on the _________ side of the periodic table.

An ionic bond is the attraction between

CaCO3 represents a chemical

From an element's location in the periodic table, you can predict

All of the following are pure substances except

Na is a

Conservation of mass in chemical reactions means

Non metals can be found on the _________ side of the periodic table.

Which group of elements have some properties of metals and some of non-metals?

Water is a compound with the chemical formula H2O. What does the "2" tell you?

Acids tastes sour, and turn blue litmus paper red. An example of an acid would be

CaCO3 represents a chemical