The Particle Nature of Matter

What is matter?

• Anything that has mass and occupies space

• Anything that does not have mass

• Anything that occupies space but has no mass

• Anything that is visible to the naked eye

What are atoms?

• The largest particles of matter

• The fundamental building blocks of matter

• Particles that can be seen with the naked eye

• Particles that do not combine to form larger particles

What is an element?

• A complex form of matter with varying properties

• The simplest form of matter with a characteristic set of properties

• A particle that cannot be represented by a chemical symbol

• A particle that is always visible to the naked eye

What is a chemical symbol?

• A three-letter representation of an element

• A one or two-letter representation of an element

• A representation that does not include letters

• A symbol that represents a molecule

Which of the following is an example of a chemical symbol?

• H2O

• CO2

• H

• NaCl

What do scientists use to represent atoms and their interactions?

• Large models

• Chemical reactions

• Spheres of different colors and sizes

• Microscopes

What is a limitation of using marbles as models for atoms?

• Marbles are too large

• Marbles do not accurately represent the relative sizes of atoms

• Marbles are not colorful enough

• Marbles are too expensive

What is a molecule?

• A. A single atom

• B. A combination of two or more atoms

• C. A type of chemical bond

• D. A single DNA molecule

What do molecular models show?

• A. The color of atoms

• B. The size of atoms

• C. How bonded atoms can be represented as joined spheres

• D. The weight of atoms

What elements make up a water molecule?

• A. Hydrogen and nitrogen

• B. Oxygen and nitrogen

• C. Hydrogen and oxygen

• D. Carbon and oxygen