States of matter
True or false:
Freezing and melting happen at the same temperature?
True
What physical property allows filtration to happen?
Different particle sizes
What is the maximum number of electrons you can place in orbital d?
10
What needs to happen with the heat for freezing to occur?
Remove heat
What method might be useful to separate salt from water?
Evaporation or Distillation
What is the electron configuration of sulfur?
1s^2 2s^2 2p^6 3s^2 3p^4.
What is the definition of melting point?
The temperature at which a solid changes into a liquid.
Which method will successfully separate a mixture of 2 metals with the following characteristics: Metal A: malleable, ductile, solid, magnetic. Metal B: ductile, solid, shiny, non-magnetic.
Magnetic separation
What is the difference between a cation and an anion?
A cation is a positively charged ion that has lost electrons. An anion is a negatively charged ion that has gained electrons.
What is the relationship between heat and temperature?
They have a direct relationship, meaning that while the amount of heat increases, the temperature will increase as well.
Describe the process of distillation
In distillation, two substances are separated from each other because of their different boiling points. The temperature is set to the lowest boiling point. This substance becomes a gas and later is condensed back into a liquid.
What is the charge of an ion with 8 protons and 10 electrons?
-2
If the boiling point of a substance is 70ºC and this substance is placed at room temperature (approx. 20ºC). What conclusion can I make about the state of matter of the substance?
I can conclude that the substance is NOT a gas. But I need more information to determine if it is a solid or a liquid
What is the main similarity for evaporation and distillation?
They both work under the same physical property which is the different boiling points
How many valence electrons does a nitrogen ion have?
8 valence electrons because when it becomes an ion it gains 3 electrons