Big Ideas
What happens during evaporation?
Changes from liquid to a gas
Particles move further apart
What are the three (main) states of matter?
Solid, liquid, gas
Water is neutral on the pH scale, true or false?
True
What is cohesion?
When the same substance sticks to itself
What is "one mic"?
One speaker in the class
Water works against gravity because of __________ _________.
Capillary action
What is the smallest unit of matter that makes up an element?
An atom
What is the paper that is used to test pH of a solution called?
pH strip
"Water has a property called adhesion because water sticks to other surfaces." True or false?
True
What is my last name?
Du
What will you use to test a solution to see if it is an acid or a base?
Use pH strips!!
_______________ are found on the Periodic Table.
Elements
What is pH?
A numeric scale that tells you how acidic or basic (alkaline) a solution is.
What is capillary action?
When water gets "sucked up", going against gravity
What is the HOWLs for today?
Responsibility
How does a solid melt?
Energy is (added/removed) and particles move (further away/closer together) from each other
Energy is added and particles move further away from each other
Is O2 an example of a molecule or a compound?
Molecule
A pH value of less than ____ is acidic.
7
Water resists temperature change because it has a high ________ ________.
Specific heat
Thinking of HOWLs, how does someone show they are ready to learn? (List 4 things)
1. Start the Do Now right away
2. Put phones and headphones away
3. Have all materials out (notes, pencils...)
4. They are paying attention
Why is water a polar molecule?
It has a negative and positive end.
Why is H2O a compound and NOT a molecule?
Because H2O is made of more than one kind of atom, hydrogen and oxygen.
*A pH value of (greater than/equal to/less than) 7 is basic.*
Greater than
What property of water allows leaves to float at the surface of water?
Surface tension
Where did I work before coming to Dean?
Holyoke High North