Lab materials
States of matter
Elements, Compounds, Mixtures
Physical or Chemical
Vocab
100
What is a test tube used for?
A test tube is used to hold, mix, or heat small amounts of liquids during experiments.
100
What do the partial spacing and movement in a solid look like?
They are compact and vibrate in place
100
TRUE OR FALSE: CO2 is an element.
FALSE: CO2 is a compound
100
Melting is an example of a _______ change
Physical
100
Define solubility.
The maximum amount of solute that dissolves in a given amount of solvent at a specified temperature (and pressure)
200
What is the material this image depicts?
A graduated cylinder
200
Which state of matter has close together particals yet also an indefinite shape?
Liquid
200
Is salad a homogenous or heterogenous mixture?
Its a heterogenous mixture
200
Sudden temperature change is an example of a _______ change
Chemical
200
What is viscosity?
A fluid’s resistance to flow (honey has high viscosity)
300
What is a beaker used for?
A beaker is used to hold, mix, and heat liquids in the lab.
300
Define Volume.
Volume is the amount of space something takes up
300
A pure substance is made of ____ kind(s) of matter and has fixed properties. How many kinds?
One
300
Sudden color or odor change is an example of a _______ change
Chemical
300
Quantitative vs Qualitative!
- Quantitative: Describes something with numbers or measurements (ex: 10 cm long).
- Qualitative: Describes something with words or qualities (ex: red color, rough texture).
400
What is the difference between a volumetric flask and a regular flask?
A volumetric flask is used to measure and mix exact volumes of liquid very accurately.
A regular flask is used to hold, mix, or heat liquids, but it’s not for precise measurements.
400
_________ is a property that depends on the amount of matter present, like mass or volume.
Extensive property
400
What is the difference between a heterogenous and homogenous mixture?
A homogeneous mixture looks the same throughout, while a heterogeneous mixture has visible, different parts.
400
Density is an example of a _______ property.
Physical
400
What is an intensive property? List an example!
An intensive property does not depend on the amount of matter present
Example: Color, density, boiling point, etc...
500
What is the use of a ring stand, clamp, and wire gauze? Define each!
-Ring stand: holds and supports equipment above the table.
- Wire gauze: sits on the ring to support beakers or flasks while they’re heated.
- Clamp: holds test tubes or flasks in place, often above a flame or for steady support.
500
Which state of matter is the most compressible and why?
Gas because the widely spread particals have the room to be pushed closer together
500
What is a chemical formula? (Hint: what does it show?)
A chemical formula shows the types and numbers of atoms in a substance
500
Flammability is an example of a _______ property.
Chemical
500
What oxidation?
Loss of electrons or increase in oxidation state; often involves combining with oxygen.