7th Atom/Molecule Voc. Quiz

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

• molecules

• atoms

• neurons

• electrons

Energy is....

• the ability to do work

• a push or pull

• a change in appearance or structure

a body of matter with no definite shape.

• mass

• matter

• atom

• molecule

Check all that are true.

• An atom is the smallest unit of matter that has the properties of that element.

• An atom is made up of protons, neutrons, and electrons.

• An atom is the largest unit of matter that has the properties of that element.

• An atom can be seen without a microscope.

Which of the following is correct?

• Protons - part of an atom that has a neutral electric charge

  Neutrons - part of an atom that has a positive electric charge

  Electrons - part of an atom that has a negative electric charge

• Protons - part of an atom that has a negative electric charge

  Neutrons - part of an atom that has a neutral electric charge

  Electrons - part of an atom that has a positive electric charge

• Protons - part of an atom that has a positive electric charge

  Neutrons - part of an atom that has a neutral electric charge

  Electrons - part of an atom that has a negative electric charge

• Protons - part of an atom that has a negative electric charge

  Neutrons - part of an atom that has a positive electric charge

  Electrons - part of an atom that has a neutral electric charge

This is what type of change?

• chemical change

• physical change

occurs when a substance combines with another to form a new substance

• chemical change

• physical change

can be observed or measured without changing the composition of matter. Includes: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others

• chemical properties

• physical properties

• mass

• matter

toxicity, oxidation, flammability, and heat of combustion are examples of...

• chemical properties

• physical properties

• molecules

Reactants

• to respond to a situation

• a number of molecules in a substance

• changing from one substance to another

• a substance that takes part in and undergoes change during a reaction.