Density
The formula for density
What is mass/volume?
The formula for aluminum chloride is AlCl3. How many of each atom are in the formula?
What is 1 aluminum atom and 3 chloride atoms?
Define concentration.
What is amount of a specific substance mixed inside of a whole?
What is our shared language to represent particle speed in a particle model?
What are arrows and sonic booms?
What is the name of the process to remove salt from water?
What is distillation?
Given a mass of 34g and a volume of 32.5mL, calculate the density. Round your answer to two decimal places (hundredths place).
What is 1.05g/mL?
What is the ratio of copper atoms to oxygen atoms in Cu2O?
What is a 2:1 ratio?
What property can we use to help us determine percent concentration?
What is density.
What is the difference between precision and accuracy?
Precision is how close a set of measurements are to each other while accuracy are how close measurements are to an expected value.
The water would possibly condense back into a liquid.
We can use density to help us find _______.
What is percent concentration?
What does a chemical formula tell us about a substance?
A chemical formula tells us which elements are found in the substance from the periodic table.
We must use a ______ _______ to find percent concentration when using density.
What is a bell curve?
What does it mean to tare a scale?
What is the difference between a chemical formula and a chemical name?
A chemical formula uses symbols to list the elements and a chemical name uses the full names of an element to list the elements.
When calculating density, we use a _______ to measure volume and a ______ to measure mass.
What is a graduated cylinder and a scale?
You are given the chemical formula NaNO3. For every sodium atom, there are ___ nitrogen atom(s) and ___ oxygen atoms(s).
What is 1 nitrogen atom and 3 oxygen atoms?
You are given 38% salt solution with a total mass of 450 grams. How much salt is in your solution?
What is 171 grams of salt?
What happens to particles if you lower kinetic energy?
Lowering kinetic energy means you are cooling the particles. If you cool the particles, they will move slower and get closer together.
What is the difference between H2O and H2O2?
Two different substances made of the same elements but in different ratios.
You get a 125 mL sample of water from Lake Michigan. It has a mass of 132.7g. Calculate the density. Round your answer to 2 decimal places (hundredths place).
What is 1.06g/mL?
Would two substances made of the same element automatically be the same substance? Explain your answer.
No they would not automatically be the same because the two substances could have different ratios and properties.
Mr. James dissolves 47 g of salt in 92 g of water (total mass of the solution: 139 g). What is the percent concentration of salt in this solution?
What is is 34%?
Explain the evaporation process.
Evaporation occurs when when liquid particles are heated, which causes the particles to speed up. The particles start turning into gas once the boiling point is reached.
Who will pass Mr. James unit test?
Everyone!