Building Blocks of Matter Crossword Puzzle

QUESTIONS LIST:

• hydrogen : h
• electron : has a minus charge
• molecule : two or more atoms chemically combined
• chemistry : substances of which matter is composed
• atom : indivisible (smallest that still retains properties)
• biology : study of life
• energy : ability to do work
• element : consists of only one type of atom
• neutron : neutral charge
• nucleus : in every atom
• matter : has mass and occupies space
• ion : add or sub electron creates _
• proton : has positive charge
• chloride : cl
• component : means part of
• ecology : study of relationships in the environment
• sodium : na
• oxygen : o
• water : one part oxygen & two parts hydrogen
• chart : elemental _