Chemistry Pre-Assessment

Multiple Choice

What is matter?

• Anything that takes up space and has mass

• A substance that stores energy

• The force exerted by a massive object

• An electrically charged material

Multiple Choice

Matter is made of:

• Atoms

• Large Particles

• Energy

• Either positively or negatively charged particles

Multiple Choice

Which state of matter is made of tightly packed atoms that cannot move around?

• Gas

• Liquid

• Solid

Multiple Choice

Which state of matter takes the shape and volume of its container

• Solid

• Gas

• Liquid

Multiple Choice

During which phase change does a liquid change into a solid?

• Freezing

• Condensation

• Sublimation

• Deposition

Multiple Choice

What is a physical change?

• An irreversible change

• A change in an object's size and/or shape

• A change that does not CHANGE the chemical makeup of a substance

• Both B and C

Multiple Choice

What is an atom?

• The smallest particle to exist

• A positively charged particle

• A negatively charged particle

• The building blocks of matter

Multiple Choice

What do we call the center region of an atom?

• Eye

• Epicenter

• Nucleus

• Center

Multiple Choice

What particle(s) is/are found in the nucleus of an atom?

• protons

• neutrons

• electrons

• protons and neutrons

Multiple Choice

An atom is made mostly of:

• Neutrons

• Protons

• Electrons

• Empty Space

Multiple Choice

What particle is positively charged?

• Neutron

• Electron

• Proton

Poll

What is an element?

• A compound composed of multiple atoms bonded together

• A substance composed of the same type of atom

• A substance composed of different atoms

Multiple Choice

The number of _______ is the same for all atoms of a specific element.

• protons

• neutrons

• electrons

• valence electrons

Poll

How do we abbreviate an element?

• With a number

• With one or two letters

• With letters and numbers

• With a color and shape

Fill in the Blanks

Fill in the Blanks

Multiple Choice

An atom becomes positively charged when it _______.

• gains a proton

• loses a proton

• gains an electron

• loses an electron

Multiple Choice

What subatomic particle does not contribute to the mass of an atom?

• Proton

• Neutron

• Electron

Multiple Choice

What is a chemical bond?

• A mixture of two or more different substances

• an attraction between atoms that forms a chemical compound

• an attraction between atoms that forms a physical mixture

Multiple Choice

How many nitrogen atmos are in one molecule of (NH₄)₂SO₄?

• 1

• 2

• 4

• 8