Bio 2 Ch 2 test

Matter is..

• Anything that takes up space and has mass

• A substance that can not be broken down into simpler substances.

• Heterotrophic or autotrophic

• Ecosystems

A substance that can not be broken down into simpler substances by chemical means...

• Molecules

• Matter

• Elements

• Moles

Which of the following are unique properties that each element has EXCEPT...

• Density

• Solubility

• Melting Point

• Charge

The smallest part of an element that displays properties of that element...

• Atom

• Proton

• Nuetron

• Electron

How many letters can an atomic symbol be?

• One

• Two

• Three

• Four or more

Which of the following are subatomic particles?

• Proton, Neutron, Electron

• Atom, Molecule, compound

• Glucose, Sucrose, Starch

• Element, Groups, Periods

What represents the number of protons in an atom of a certain element?

• Atomic Number

• Valence Number

• Mass Number

• Atomic Mass

What two things are added together to find a mass number?

• Number of protons and nuetrons

• Number of protons and electrons

• Number of electrons and neutrons

• Number of atoms and isotopes

The atomic mass for an atom averages the mass for every ____ of that atom

• isotope

• ion

• proton

• molecule

An isotope is an atom of an element with the same number of protons but a different number of ____.

• Neutrons

• Electrons

• Ions

• Charges