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Vocabulary
Structure of Atom
Periodic Table
Physical Properties
Density
100
smallest unit all matter
atom
100
center of the atom
nucleus
100
Atomic number is the number of ___.
protons
100
how much space an object takes up
volume
100
unit for mass
grams
200
substance with all the same type of atoms
element
200
positive charge
proton
200
What is the atomic number of K?
19
200
amount of matter in an object
mass
200
tool for mass
triple beam balance
300
chart that organizes the elements
periodic table
300
negative charge
electron
300
How many protons does Na have?
11
300
how much matter in a given amount of space
density
300
mass = 2.0 g; volume = 4.0mL; density?
0.5 g/mL
400
temperature at which a liquid becomes a gas
boiling point
400
Periodic Table is arranged in order of
number of protons
400
atomic mass of Mg
24
400
molecules are vibrating close together, not spread out
solid
400
mass = 40.0g; volume = 10.0mL; Will it sink or float in water?
sink
500
process of a gas becoming a liquid
condensation
500
Which particles are in the center of the atom?
protons and neutrons
500
# of neutrons in Na
12
500
process of gas becoming a solid, without becoming a liquid first
sublimation
500
mass = 3.0 g; l=2.0 cm, w=4.0 cm, 3.0 cm; density?
0.1 g/cm^3