7th Grade Chem Review

Mass, relative density, solubility, color, texture, state of matter, conductivity, etc.

• Physical state
• Insulators
• Physical Properties 
• Inferences

Anything that has mass and takes up space is called

• volume
  volume
• matter
• magnetism
• electricity

Which of the following is NOT an example of matter?

• sun
• air
• snow
• thoughts

True or False: You can create and destroy matter

• True
• False

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

The atomic number tells you what? READ THE ANSWERS CAREFULLY

• only the number of electrons

• only the number of protons

• only the number of neutrons

• the number of both electrons and protons in an atom.

This is an example of a physical change

• a nail rusts

• water changes states

• fire cracker exploades

• a color forms when mixing two acids