Phases of Matter
The three most familiar phases of matter?
Solid, Liquid, and Gas
What do atoms combine to make?
Molecules.
When a new substance is formed
Chemical change.
What is the name of the number above each element?
Atomic Number
the amount of space that a substance or object occupies.
Volume
When energy is added to a liquid what happens to the atoms & molecules?
They begin to move at a very fast speed.
What two charges are inside the nucleus & what charge is outside the nucleus?
Inside: Protons & Neutrons
Outside: Electrons
An ice cube melting on the stove is an example of which change?
Physical change
What is the, most abundant element on the periodic table?
Hydrogen
What two actions in the phase changes require energy to be removed?
Condensation & Freezing/Cooling
What phase of matter is the element called Mercury?
Liquid.
What do atoms have that they always try to fill?
Their shells
Condensation & Evaporation are examples of which type of change?
Physical Change
What does the Symbol "Mg" stand for on the periodic table?
Magnesium
What is H2O in solid form?
Ice
Stars are an example of which Phase of Matter?
Plasma
All protons have the same number of ________ & ________.
Electrons & Neutrons
When gold is melted and shaped into a chain, what change occurred?
Physical
Name 5 metals on the periodic table
Multiple Answers
Sugar dissolved in water is an example of this.
Solution
What are the standard conditions for Celsius and Fahrenheit?
0 degrees Celsius & 32 degrees Fahrenheit
What number of protons do Oxygen have?
8
Chewing and and digesting food are what type of changes?
Chewing: Physical
Digesting: Chemical
How many natural elements are on the periodic table?
92.
Able to float or rise to the top of a liquid or gas?
Buoyancy