Observing Matter
How do you observe matter?
(sight, touch, taste, smell, sound)
What is all matter made of?
All matter is made of elements
(which are made of atoms)
What is volume?
How do you find the volume of an irregular object?
Volume is how much space something takes up
The water displacement method is used to find the volume of an irregular object.
solids- Vibrate in place and very close together
Liquids- Slip past each other and are slightly further apart then in a solid.
Gas- Very far apart and move very quickly.
How can someone make gooey brownies more firm?
Put them in the refrigerator to cool
What are some observable words you can use to describe water? (name 5)
Liquid, wet, clear, tasteless, reflective, colorless, odorless.
What are the three particles in an atom, and their locations.
Protons- In the nucleus
neutrons- In the nucleus
Electrons- Outside the nucleus
What is density?
Mass per volume
How much matter is in a certain space.
What tool/unit do we use when discussing mass?
A balance scale
g or kg
What does it mean if a substance is soluble?
Give an example of a soluble and insoluble material.
It is able to dissolve in water.
soluble: salt
Insoluble: sand
A compound has what?
Two or more different elements bonded together.
What is the unit for volume?
cm^3 or ml are commonly used
Why does a gas fill up its whole container but a solid does not?
A solid has a definite shape and volume, a gas takes up the space and volume of its container.
What happens to volume when mass increases?
What does it mean if something is a good conductor?
An example is copper (metal)
Elements are made of.....
One or more of the same type of atom
You have two samples of white materials.
One is baking soda and one is flour, what is one property you can test to identify the which is which?
Solubility
Baking soda is soluble, flour is not.
How does temperature affect particle arrangement and speed?
As temperature increases spacing and speed of the particles increases.
How do we represent an element and compound?
Element: 1-2 letters
Compound: Several letters and numbers
What are the two components of a solution?
Give an example
A solution consists of a solute and solvent.
In salt water the solvent is the water and the solute is the salt.
What happens if the ratio of atoms is changed in a compound?
What is the difference between mass and weight?
mass is how much matter a substance has, weight is the force of gravity on an object.
How do you know matter exists even if you can't see it?
C6H12O6
carbon-6
Hydrogen-12
Oxygen-6