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Vocabulary
Atomic Theory
Periodic Table
Matter
Density
100
The chart that arranges elements by atomic number is the _______________.
Periodic table
100
True or False. Electrons are embedded in a positively charged sphere.
False
100
True or False- The periodic table arranges elements with similar properties into columns.
True
100
Which state of matter has a definite shape and volume?
Solid
100

What is the formula for density?

Mass / volume

200
The ___________ of an element determines its properties.
Atomic Number
200
Atoms that have the same number of protons but different numbers of neutrons are called what?
Isotopes
200

Which element has atomic number 8?

Oxygen

200
Name the four states of matter.
Solid, Liquid, Gas, Plasma
200

What tool is used to measure mass?

triple beam balance

300
The smallest unit of an element that still has the properties of the element is an _____________.
Atom
300

Which scientist coined the term "atom?"

Democritus

300

What is the atomic mass of Magnesium?

24

300

In which state are molecules packed tightly together?

solid

300

If a solid has a density of 0.9 g/cm3, will it sink or float in water?

float

400
What are the three subatomic particles that make up an atom and their charges?
Proton-positive, Neutron-no charge, Electron-negative
400

Which scientist used his gold foil experiment to find the nucleus?

Rutherford

400

How many protons does Fluorine have?

9

400
If you had an ice cube and wanted to change it into all three of its states, what materials would you need?
Container, and a source of heat.
400

What is the density when the mass is 3 g and the volume is 6 mL?

0.5 g/mL

500
The center of every atom and contains at least one proton.
Nucleus
500

Which model did Bohr come up with?

Solar system model

500

How many neutrons does Chlorine have?

18

500
What is the process called when a substance is changed directly form a solid into a gas?
Sublimation
500

If a block's density is 10 g/cm3, what would the density be if the block was cut in half?

10 g/cm3