What is Matter?
What is matter made of?
atoms
What are physical properties?
characteristics of a substance that can be observed without changing it into another substance - what it looks like, texture, and state.
When a liquid goes to a gas that is called.....
evaporation
When a liquid goes to a solid that is called?
freezing
Almost no forces of attraction between particles - is it a solid, liquid or a gas?
gas
Particles are spaced far apart - is it a solid, liquid, or a gas?
gas
What are the 2 categories that mixtures can be split into?
homogenous and heterogeneous
Pure Substance
include elements and compounds. They cannot be broken down into separate parts through any physical means.
Particles have medium kinetic energy - is it a solid, liquid, or a gas?
liquid
What state of matter is being described here - definite volume but able to change shape by flowing.
liquid
To be classified as Matter it has to have.....
mass and volume
What is conservation of mass?
mass cannot be created or destroyed
Product of freezing - is it a solid, liquid or a gas?
solid
Strong forces of attraction between atoms - is it a solid, liquid or a gas?
solid
What state of matter is being described here - relatively rigid, definite volume and shape.
solid
What are the 3 states of matter?
solid, liquid, gas
What is a solvent?
substance that does the dissolving. Ex: the water from our racoon clip.
What is kinetic energy?
the energy an object has due to its motion
How many elements are naturally occurring in our world?
94
What is potential energy?
energy that is stored
How many different elements are on the periodic table?
118
How many elements were made by scientists?
24
What does it mean if a solvent is saturated?
A solvent is saturated when it will NO longer dissolve any more solute. Example: our salt/vinegar solution with pennies or even the salt/water solution for the pennies.
How do particles in a gas move?
Fast in all directions - very random.
What state of matter is being described here - No definite volume or shape. Takes the shape and volume of its container.
Gas
What is thermal energy?
Heat energy
What does heterogenous mean?
Mixtures are NOT evenly mixed....NOT uniform throughout
What does homogenous mean?
Mixtures are evenly mixed which means doesn't matter where you take the sample from it will be the SAME throughout.
Does the amount of matter (mass) change during a physical change?
NO!
What is the table called which organizes the atoms?
Periodic Table of Elements
What are the 2 different properties we use to classify matter?
Physical and Chemical Properties
What is a physical change in matter?
Physical change in matter is a CHANGE IN STATE OR APPEARANCE (SIZE / SHAPE).
What is solubility?
The ability of one substance to dissolve into another substance.
What is solute?
The substance that dissolves. Ex: the cotton candy from our racoon clip.
How do particles in a solid move?
They are packed tightly together and just slightly vibrate.
How do particles in a liquid move?
They slightly move past one another since liquids flow.
What is a solution?
When a solute dissolves into a solvent
What does it mean if something is soluble?
When a substance dissolves in another substance.
What does it mean if something is insoluble?
When a substance does NOT dissolve in another substance.
Physical Change
a change of matter from one form to another without a change in chemical properties
Chemical Change
a change that produces matter with a different composition than the original matter
Mixtures
a physical combination of substances that can still be separated because they have NOT been chemically combined! Substances can be separated from the mixture into their individual components.
When a gas goes to a liquid that is called
condensation
What are chemical properties?
properties that can only be observed when one substance changes into a different substance - through a chemical reaction - flammability