Final Scavenger Review Part 1

Front

What is a chemical change?

Back

A chemical change occurs when a substance is transformed into one or more new substances with different properties. It is not reversible.

Front

What compound is represented by the formula H2O?

Back

Water

Front

What is the chemical formula for water?

Back

H2O

Front

Which of the following is an element: NaCl, Fe, HBr, CO?

Back

Fe is an element.

Front

How many elements make up the compound of water?

Back

2 (Hydrogen and Oxygen)

Front

What is the definition of a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.