States of Matter
What are the the states of Matter? Give an example of each.
Solid, Liquid, Gas
Examples:
Solid- desk, box, pencil
Liquid- water, juice, milk
Gas- water vapor, steam, smoke
How many elements are on the periodic table?
118 elements
What is the density of water?
What is the definition of physical change?
A physical change changes the properties of a substance such as size, shape or form.
What is a positively charged atom called
Proton
What are the phases throughout each state of matter?
Melting, freezing, evaporation, condensation, sublimation
What is the definition of an element?
a simple substance that cannot be broken down.
What metric unit do we use for density of a liquid?
grams per milliliter cubed (g/mL3 )
What is the definition of chemical change?
A chemical change is a reaction that rearranges the particles of two or more substances to create at least one new substance.
What are the 3 subatomic particles that make up an atom?
Proton, neutron and electron
If heat is added to an ice cube it becomes what state of matter?
Liquid
What is the first element on the periodic table?
What is the formula of density?
mass divided by volume
An ice cube is placed in the sun. Later there is a puddle of water. Later still the puddle is gone.
Physical change
True or False: Everything around you is matter?
True
What is it called when a solid changes directly into a gas?
sublimation
They are arranged into groups with elements of similar properties.
An object has a mass of 4 grams and an volume of 2 cm3. What is the density of the object?
2 g/cm3
Liquid water is in a pan on a hot plate. The liquid water is boiling and changing into water vapor. This is an example of physical change. WHY?
There is not a new substance being formed. The water is staying the same just changing into water vapor
What is responsible for the mass of an atom?
Protons and Neutrons
What two variables are dependent on how the atoms are arranged in their state of matter?
Pressure and Temperature
What is the name of this element: Pu
Plutonium
If an object has a high density are the particles more packed in or less packed in?
particles are more packed in
Think about when you would bake a cake. Is the mixture an example of a chemical or physical change?
Baking a cake is a chemical change because the mixture starts to occur when the ingredients are mixed and forming into new substances.
Elements have different properties. List them all
Atomic number, atomic mass, element name, element symbol