Science 1

What is matter?

• Anything that has mass and takes up space.

• Air

• All Above

• Water

What is a scientific theory

• A thought based personal feelings

• A idea based on social experiments

• A well-tested idea that explains and connects a wide range of observations

• None of the above

Valence electrons are?

• Electrons that have the highest energy level and are held most loosely

• Electrons that have the highest energy level and are held most tightly

• Electrons that have the lowest energy level and are held most loosely

• Electrons that have the lowest energy level and are held most tightly

what is a atomic number?

• number of nuclei of an atom.

• Number of protons in the nucleus of an atom.

• The order in which they were discovered.

• None of the above.

An ion is an

• Electron

• Element

• Atom or group of atoms that has an electric charge.

• A metal

The chemical bond formed when two atoms share electrons is called a ?

• Bond

• Covalent bond

• Ionic Bond

• None above

a compound that is composed of molecules.

• Molecular compound

• ionic bond

• covalent bond

• None above

what is the formula for water

• CH8

• NaCi

• H2O

• CH4

Carbon atoms can form

• straight chains

• branched chains

• rings

• All Of the Above

Each metal ion is held in the crystal

• Covalent bond

• ionic bond

• Metallic bond

• All above