If I am mixing salt into water; water is called the __________ (starts with an S).
Solvent.
100
List 3 characteristic physical properties of matter.
Melting point, boiling point, density, malleability, viscosity, color, odor, texture, conductivity...etc.
100
The component that is being dissolved is called the _________.
Solute.
100
If I can no longer mix any more salt into a glass of water I have a ____________ solution (starts with an S)
Saturated.
100
Are electrons in a water molecule shared equally or unequally?
Unequally.
200
If a substance is uniformly mixed is it heterogenous or homogenous?
Homogenous.
200
List 2 characteristic chemical properties of matter.
ability to burn, rust, tarnish, react with chemicals, decompose.
200
Do solutes dissolve faster or slower in cold water?
Slower.
200
True or False: Salt is less soluble in alcohol than it is in water.
True.
200
What part(s) of a water molecule are positive? What part(s) are negative?
Hydrogen - positive. Oxygen - negative.
300
What is water – a mixture, solution, compound molecule, or molecule?
Compound molecule.
300
If I have 2 objects that look, smell, and feel the same, what is 1 strategy I could use to identify them?
Density, solubility, melting, boiling point.
300
Give one example of a gas dissolving into a gas.
Oxygen dissolving into nitrogen, or carbon dissolving into nitrogen.
300
According to Makoa, what is something else we need to consider when talking about solubility as the maximum amount a substance can be dissolved in a solvent?
Temperature.
300
What allows a water strider (bug) to walk on water?
What is the name of the law that says mass is neither lost nor gained, even during the process of dissolving?
Conservation of Mass.
400
If I have two liquids that look and smell the same what physical property could I use that measures a substance’s resistance to flow?
Viscosity.
400
True or False: When sugar (C6H12O6) dissolves it breaks down into carbon, hydrogen, and oxygen atoms.
False.
400
What units are used to measure solubility?
Grams over 100mL
400
When salt and water combine the chloride ion (Cl) is attracted to what part of the water molecule?
The positive hydrogen atoms bond to the negative chloride ion.
500
When an atom gains or loses and electron it becomes an ______
Ion.
500
I have 2 metals. I want to use 1 of them to make a bicycle. I need to choose the one that can be hammered and molded easiest. What physical property am I going to examine?
Malleability.
500
Draw a picture of water dissolving sodium chloride.
See Pictures.
500
If I dissolved a 10g of a solute into 200mL of water and it becomes saturated, what is its solubility?
5g/100mL.
500
In water molecules the hydrogen atoms are connected to the oxygen atom by what type of bond?