Vocabulary
Solutions and Mixtures
Physical Properties
States of Matter
Were you paying attention?
100
Define weight.
the amount of gravity needed to pull an object down.
100
Define solvent.
A substance that is able to dissolve other substances.
100
What is the formula to calculate volume?
Volume equals length times width times height. V= L x W x H
100
What are the three states of matter?
- gas - liquid - solid
100
How many elements are in a molecule of H2O?
2 (hydrogen and oxygen)
200
Define volume.
The amount of space an object takes up.
200
Materials in simple mixtures can be: a) cannot be seperated b) can be seperated easily c) can be seperated using only a filter d) can be seperated only by using heat
b) can be seperated easily
200
What is the formule to calculate density?
Density equals mass divided by volume. D= m/v
200
Give an example of a solid, gas, and liquid.
Answers will vary. possible answer: Solid: Desk Gas: air Liquid: water
200
Particles in salts arrange themselves in a regular geometric pattern to form what?
Crystals.
300
Define Solute.
The substance that dissolves.
300
Using the examples of cake and a salad, which one is a mixture? which one is a solution?
Cake is a solution. Salad is a mixture.
300
What is the density of an object that has a mass of 92 grams and a volume of 40 milliliters? The answer should be in decimal form (no remainders as fractions! Keep dividing).
2.3 g/ml
300
When does dew (water droplet) form?
When water vapor is cooled.
300
How can you find the volume of an irregular shape, like a crown?
To find the volume of an irregular shaped object you need to place the object in liquid. find the difference between the original amount of liquid and how the amount of liquid that is displaced.
400
Define Density.
The amount of matter in an object.
400
Give an example of mixture and an example of a solution. Do not use the example of cake and a salad.
Answers will vary.
400
Look at the periodic table in your science book. Which of the following elements has properties similar to flourine (F)? a) sulfur b) neon c) chlorine d) nitrogen
Chlorine
400
What causes the phase change of water shown in the illustration your teacher drew on the board?
Heating.
400
Compare the density of gold in a ring and in a necklace.
Density will be the same, regardless of the shape of the object (gold).
500
Define buoyancy.
Describes if an object's density will let it float or sink compared to the density of the liquid it is put in.
500
Describe the similarities and differences between mixtures and solutions.
Similarities: Mixtures and solutions are similar because they both combine elements. Differences: Mixtures and solutions are different because you can seperate mixtures. You cannot seperate solutions.
500
Most elements are metals. What are some properties of metals?
- shiny - bendable - conducts heat
500
Why do most materials get smaller when they cool?
The particles have less space between them.
500
Explain how buoyancy and density are related to each other.
The less dense an object is compared to the liquid its in, the object will be buoyant (it will float).
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