Vocabulary
a measure of the amount of matter in an object
Mass
This physical property is measured with a triple beam balance.
Mass
In a solution, the ________ goes inside the ________.
In a solution, the solvent goes inside the solute.
Does this image represent a chemical or physical change?
Chemical change
A process that separates solid matter and fluid from a mixture using a filter medium that has a complex structure through which only the fluid can pass.
Filtration
the curved upper surface of a liquid in a tube (such as a graduated cylinder)
Meniscus
If an object’s volume increases, then its density will _________.
Stay the same
a solution that contains less than the maximum amount of solute that is capable of being dissolved
Unsaturated Solution
Does cutting down a tree represent a chemical or physical change?
Physical Change
the process of pouring off the top layer of liquid from a bottom layer of liquid or solid
Decantation
a molecule with an even charge distribution
Nonpolar Molecule
An object with a density of 1.54 g/mL will (float or sink) when placed in a liquid with a density of 1.07 g/mL.
Sink
The y-axis unit is...
Grams of solute/100g of H2O
How does the total mass of this system compare before and after the reaction?
It does not change
A special piece of glassware used to perform extraction.
Separatory Funnel
A property that is not dependent on the amount of a substance and will stay the same even if other physical properties change.
Intrinsic Property
This physical property is measured by scratching various objects against the unknown and seeing which leaves a mark.
Hardness
The solubility of NH4Cl at 70℃
60g of NH4Cl / 100g H2O
Jaslene is baking bread. She mixes flour, water, yeast, salt, and oil. When she takes the loaf out of the oven, she notices several large air bubbles. Does this represent a chemical or physical change?
Chemical Change
Describes liquids that will not form a homogeneous mixture.
Immiscible
A process that changes substances into new substances by breaking and making chemical bonds
Chemical Change/Reaction
Based on the picture, the volume of the rock is _____.
30 mL
At what temperature do NaNO3 and KNO3 have the same solubility?
70℃
Use CER: which of the following is a compound?
The molecules on the right represent a compound because each molecule has two different atoms. A compound is a chemical substance in which two or more elements have bonded together. In this example, one atom of the red element has bonded to two atoms of the green element, creating a new compound molecule with different properties than either element alone.
Distillation is used to separate this kind of mixture.
Solutions