Phenomena
What is the main phenomenon we were working with this unit?
A bath bomb!
What happens when a bath bomb is added to water (and what causes it to happen)?
The water fizzes because there is a chemical reaction taking place
What is a chemical reaction?
Chemical Name for the Element H
Hydrogen!
What are the 3 states of matter?
Solid, liquid and gas
Elephant Toothpaste, Boiling Water, Vinegar and baking soda, etc.
Does the gas from a bath bomb come from something else or whats already there?
The Ingredients inside/ whats already there
What happens when a bath bomb is added to water?
It fizzes up!
Chemical Symbol for the Element Carbon
C!
What does it mean to dissolve?
To have solid particles spread apart to become part of a liquid
What disability did John Dalton have that changed the way we make models in science?
Which combinations of the substances in a bath bomb produce a gas?
Baking soda and citric acid
How can you create a new substance from a chemical reaction, without losing any matter or mass?
Create a closed system
Name 2 of the 3 most stable substances
CO2, H20 and 02
What are the elements found in baking soda?
Na, C, H and O
What is a property?
A characteristic that cannot change
How do Dalton’s models of the particles that change in a reaction compare to the ones we developed?
Dalton used symbols rather than colors and circles.
What is a reactant?
the substances that combine to make a chemical reaction.
What do multiple particles make up?
Substances!
What is Odor?
A scent or a smell
How can we make something new that was not already there?
We create a chemical reaction, where particles trade and move around, creating new substances.
Why do different substances have different odors and how do we detect them?
Particles enter our noses and attach to our olfactory system. Different arrangements / amounts of particles create different signals in our brains.
Phase Change vs Chemical Reaction
Phase Change is changing the state of matter
Chemical Reaction is when the particles of two or more substances interact.
Name one flammable gas!
Oxygen, methane, hydrogen, carbon monoxide, propane, etc.
Define Viscosity
The thickness of a fluid