Chap 2 Test

An element is defined as,

• A pure chemical substance consisting of one type of atom

• A chemical substance consisting of two atoms

• Two atoms of a substance

• A substance that contains multiple atoms

What is an atom?

• A large component of an element

• A component containing two or atoms

• The smallest piece of matter

• The smallest component of an element having the same chemical properties of that element

A charged atom or molecule is known as,

• Ion

• Neutrons

• Protons

• Compound

A substance containing two or more different elements is called a ___________________.

• Compound

• Covalent

• Ion

• Element

What is the definition for ionic bond?

• A bond between ions in which electrons are transferred.

• A semi-bond between electrons that are transferred.

• A conductor of ions.

• A bond between elements of all atoms in the periodic table.

A substance composed of two or more atoms is known as _____________.

• molecule

• proton

• neutron

• atom

A bond between elements in which electrons are shared is called _______________.

• covalent bond

• semi-bond

• a bond

• conductor

What is a hydrogen bond?

• A weak covalent bond formed between molecules.

• A strong covalent bond formed between molecules.

• A bond between atoms.

• An semi-conductor bond that holds atoms together.

What is the chemical formula for water?

• H₂O

• H₃O

• O₂H

• H²O

What kinds of bonds hold the hydrogen and oxygen together in one water molecule?

• covalent bond

• conductor bond

• semi covalent bond

• ionic bond