Vocabulary
What is matter?
Anything that has mass and takes up space.
The amount of mass in certain amount of space.
Density
What is a physical change? Give an example.
A change in a substance the doesn't totally change the substance.
When do you use the units mL and cm3?
mL = liquid cm3 = solid
What is the density of water?
1 g/mL
What is solubility?
The ability to dissolve into another substance.
What is water displacement?
a method used to determine the volume of an irregular solid
What is a physical property?
A characteristic that can be observed without changing the substance.
How many mL are in 1 cm3?
1
What did we use to measure the mass of objects for density?
Scale/balance
What is the smallest unit of an element?
Atom
What do you call atoms that have joined or bonded together?
molecule
What is a chemical change?
A change that produces a new substance.
What item did we used to find the volume of a liquid?
graduated cylinder
How does heat affect molecules?
When you heat up molecules they move around more and create a bigger volume?
What is volume?
The amount of space an object takes up?
What is the unit for mass?
grams
Give 3 examples of how you know a chemical change happened.
fire, explosion, change in temp, heat, change in color, etc
6 g/mL
Explain the difference in atoms/molecules in a solid, liquid, and gas?
solid - compact, liquid - spread out more, gas - very spread out
What is the amount of matter in an object called?
Mass
What is the unit for volume of a liquid?
mL
What are the 4 states of matter?
solid, liquid, gas, plasma
Explain the process of finding the density of an irregular object.
You need to use the water displacement method.
What were the 3 most dense and 3 least dense objects we used.
corn syrup, aluminum, bolt -- alcohol, wax, nylon spacer