Vocabulary
What is matter?
How is matter measured?
How do substances mix?
How does matter change?
100
What is density?
The amount of mass in a certain volume is a property called density.
100
List the three most familiar states of matter and give examples of each.
Solid- ice Liquid- water Gas- water vapor
100
What is mass? How can the mass of an object change?
Mass is the measure of the amount of matter in an object. The mass of an object does not change unless matter is added to or removed from it.
100
Name a solution.
Salt and water
100
Physical or Chemical Change: An origami sculpture.
Physcial
200
What is a mixture?
A mixture is a combination of two or more substances.
200
Name the substance that you can find naturally in all three states of matter.
Water
200
What are the types of metric units used to measure mass?
milligram, gram, and kilogram
200
What is the solubility of sand and water? Explain your answer.
0. Sand does not dissolve in water.
200
What is a phase change?
Phase changes are examples of physical changes that can be reversed by adding or removing energy.
300
DOUBLE JEOPARDY!!!!!!! What is a solution? Describe the parts of a solution.
A solution is one or more substances being dissolved in another substance. A solute is the substance that is dissolved. A solvent is the substance that takes in, or dissolves, the other substance.
300
Describe the formation of particles in a solid.
They are tightly packed and arranged. They move back and forth, but they do not change places with each other.
300
What is volume?
Volume is the amount of space that matter takes up.
300
Name two ways in which one can speed up the process of dissolving a solute.
Raising the temperature and crushing it.
300
How does adding or taking away heat energy cause changes in matter?
Every substance changes phases at a different temperature.
400
What is a physical change? Give an example
A change in the size, shape, or state of matter is an example of a physical change. ex. breaking a pencil; molding clay into different shapes
400
Describe the formation of particles within a liquid.
The particles are close to each other, but they are not held tightly together. The particles are able to slide past one another.
400
When comparing densities, the substances with the greatest densities are near the __________. Explain your answer.
bottom.
400
Name a mixture.
frozen vegetables
400
What is an element?
The simplest pure substances are called elements.
500
What is a chemical change? Give examples.
A chemical change produces a completely different kind of matter. ex. burning wood->ashes, carbon dioxide gas, and water vapor
500
Describe the formation of particles in a gas.
Particles in a gas move around more easily and quickly. They are not arranged in any special way.
500
Describe how one could find the volume of an object that sinks in water.
Put some water into a graduated cylinder. Record its height. Then place the object into the cylinder, and record the height of the water again. The object has pushed away some of the water. The water level has risen the same number of milliliters as the volume of the object.
500
True or False: All substances in a mixture that are separated out do not have the same properties as before they were mixed.
False. They DO have the same properties.
500
When you chew food, are you causing physical or chemical changes to the food? Explain your answer.
Both.
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