Fall Chemistry Final Review

Front

What are the correct formulas and coefficients for the products of the following single-replacement reaction? Mg + Al(OH)3 →

Back

2 Al + 3 Mg(OH)2

Front

Covalent bonds result in the __________ of electrons between two __________.

Back

Sharing, non-metals

Front

Write 0.000254 in scientific notation.

Back

2.54 x 10⁻⁴

Front

Which of the following is an example of an alkali metal? Helium, Sodium, Chlorine, Neon

Back

Sodium

Front

What is one way to speed up a chemical reaction? Increase the temperature, Decrease the concentration of reactants, Decrease the surface area of reactants, Remove the catalyst

Back

Increase the temperature

Front

What is the definition of a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is an ionic bond?

Back

A chemical bond formed between two ions with opposite charges.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.