Chemistry FALL SEMESTER REVIEW PRACTICE QUESTIONS

Front

What are the rows referred to on the Periodic Table of Elements?

Back

Periods

Front

Which of the following is a physical change? (Burning of coal, Digesting food, Souring of milk, Dissolving salt)

Back

Dissolving salt

Front

What is the name of group number 2 on the Periodic Table?

Back

Alkaline earth metals

Front

What group number are the halogens found?

Back

17 (7A)

Front

Which of the following describes a chemical property of an element? (Copper is malleable, Nonmetals are not shiny, Sodium reacts violently with water, Silicon is a poor conductor of electricity)

Back

Sodium reacts violently with water.

Front

What is the definition of a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is the definition of a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances.

Front

What are the main groups of the Periodic Table?

Back

Alkali metals, Alkaline earth metals, Transition metals, Halogens, Noble gases.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom and determines the element's identity.

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.