Chemistry Foundations Final

Elements which are shiny, conduct electricity and heat are called

• metal

• nonmetal

• metalloid

• nonexistent

The atomic number of this pictured element is

• 28
• 58.6934
• Ni
• Nickel

What are valence electrons?

• Any of an atom's electrons

• Electrons located on the first energy level

• Electrons not attached to any atom

• electrons located on the outer energy level

Which group of the periodic table is composed of inert (not reactive) gases with 8 valence electrons?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

The atoms on the right of the staircase are called

• metalloids

• non-metals

• metals

• noble gases

What is a water molecule composed of?

• 1 Hydrogen atom and 2 Oxygen atoms
• 2 Hydrogen atoms and 1 Oxygen atom
• 3 Oxygen atoms
• 2 Helium atoms and 1 Oxygen atom

^{_{This photo shows water molecules in which state of matter?}}

• Liquid
• Solid
• Gas

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

Which has the greatest density?

• A

• B

• C

• All the same density