Structure of The Atom

By which one of the following matter is made?

• Non-metals

• Atoms

• Metalloids

• Metals

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following is the best statement about molecules?

• Compounds are made of molecules, which consist of two or more different atoms joined together chemically

• All matter is made of molecules, which consist of identical atoms joined together.

• Molecules cannot be split apart.

• Molecules are particles of compounds, and consist of two or more atoms joined together.

Tags

NGSS.MS-PS1-1

Salt is made up of what elements?

• Sodium and Chloride

• Sodium and Chlorine

• Sodium and Copper

• Sodium and Oxide

Tags

NGSS.MS-PS1-1

Matter is defined as anything that _____________.

• has mass

• occupies space

• has mass and occupies space

• none of these

Elements that can exist as a single atom

• diatomic

• monatomic

• compound

• molecule

What sub-atomic particle of an atom is represented by the atomic number of an element?

• number of electrons

• number of protons

• number of neutrons

A pure substance made of two or more elements that are chemically combined is called a _______.

• Compound

• Mixture

• Solution

• Molecule of element

Tags

NGSS.MS-PS1-1

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

What is it called when a solid turns directly into a gas?

• Sublimation

• Condensation

• Liquid

Molecules are far apart and are in constant motion.

• Solid
• Liquid
• Gas

Tags

NGSS.MS-PS1-4