Name it
formula by which you can understand the chemical makeup of any substance.
What is a chemical formula?
A liquid capable of dissolving other substances
What is a solvent?
when individual molecules are so strongly attracted to each other that they tend to stay together, even when exposed to tension.
What is cohesion?
This is how water softeners work.
What is replace calcium and magnesium ions with sodium ions through ion exchange? (or something close that mentions ion exchange)
A substance contains one carbon atom and four hydrogen atoms. Write its chemical formula.
What is CH4?
substance composed of oppositely charged ions held together by strong electrostatic forces. Typically formed when metal reacts with non-metal
What is an ionic compound?
a substance that is dissolved in a solvent.
What is a solute?
effect of cohesion at the surface of a liquid.
What is surface tension?
What is people may not want extra salt in their diets? (or are on low sodium diets)
A substance contains two sodium atoms (Na) and one oxygen atom. Write its chemical formula
What is Na2O?
Using electricity to break a molecule into smaller units.
What is Electrolysis?
what is made when a solute is dissolved in a solvent.
What is a solution?
weak attractions between a partially positive hydrogen atom of one water molecule and a partially negative oxygen atom of a neighboring water molecule.
What are hydrogen bonds?
THis is why solid water floats but solid butter sinks.
Typically, a solid is more dense than a liquid and sinks, as happens with butter. But for water, hydrogen bonds force water molecules into a crystal structure when frozen that is less dense than liquid water, so ice floats.
In the formula CaCl₂, list the atoms in the formula and how many of each there are.
What is 1 calcium ion and 2 chloride ions?
A molecule that has slightly + and slightly - charges because of how electrons are shared
What is a polar molecule?
This is considered the universal solvent
What is water?
Why is water a polar molecule?
What is oxygen pulls electrons more strongly than the hydrogen?
During our lab, with the battery and Epsom salts, we simulated electrolysis to make this happen.
What is we split water into hydrogen and oxygen.
In the formula K₂CO₃, list the three atoms in the formula and how many of each there are.
What is 2 potassium ions, 1 carbon ion and 3 oxygen ions?
Water that has certain dissolved ions in it. These can affect the taste of the water and lead to build up of scale in pipes.
What is hard water?
A solution is always this (heterogeneous or homogeneous?)
What is homogeneous?
These are the two ions hard water contains
What is calcium and magnesium ions?
This is why we could make paperclips float
What is surface tension?
In the formula Al₂(SO₄)₃, how many aluminum atoms, sulfur atoms, and oxygen atoms are there?
2 aluminum, 3 sulfur, 12 oxygen