Chapter 7 Flashcards
A characteristic of matter that can be measured or observed with the senses.
Physical property
What are the states of matter?
Gas, liquid, solid.
Matter that has no definite shape and that does not take a definite amount of space.
Gas
Matter that takes the shape of its container and takes up a definite amount of space.
Liquid
Matter that has a definite shape and that takes up a definite amount of space.
Solid
The amount of matter in an object.
Mass
The amount of space that matter takes up
Volume
Ice is a…
Solid
If you heat ice, it becomes a…
Liquid
If you heat liquid water, it becomes a…
Gas called water vapor
Texture, temperature, hardness, sound, flavor, and size are…
Physical properties that you can observe
How can you observe physical properties?
By using your senses of sight, touch, taste, smell and hearing.
Mass is given in units called…
Grams (g)
How is mass measured
A scale
Matter that is made up of two or more substances or materials that are physically combined is a…
Mixture
This is a single kind of matter with certain properties. Every part of it is the same throughout.
A substance
Salt, sugar, water, and gold are examples of _________ because every part of them are the same throughout
A substance
Is salt water a substance or a mixture?
A mixture, because it combines The substances salt and water
Is mud a substance or a mixture?
It is a mixture, because it combines dirt and water.
Suppose you mix together fine sand that has small grains with coarse sand that has large grains the two kinds of sand would A. Form new kinds of matter B. Keep their original properties C. Change color only D. Change size and color
B. Keep their original properties
- making a mixture is a physical change. Mixing two or more substances can change the form, color or texture of the substances sometimes. But the properties of each substance in the mixture never change.
How is making a mudpie a similar type of mixture to a bowl of soup with rice?
They both are a mixture of a solid substance and a liquid substance.
Sugar water is a solid – liquid mixture. What is the solid?
Sugar
How are a mixture of clothes in the washing machine full of water, and a damp sponge alike?
They are both a solid – liquid mixture
How are you mixture of clothes in the washer full of water and a damp sponge different?
The clothes and water look like a solid – liquid mixture, but the sponge absorbs the water and looks like just a solid.
Clouds are a liquid – gas mixture made up of…
Water drops and air
Fizzy drinks, like Sprite, are what kind of a mixture…
Liquid – gas mixture
* the fizzy bubbles are the gas
When you cook on a grill, or burn a campfire the smoke produced is a mixture of…
A solid – gas mixture
* The smoke has a air, other gases and tiny solid particles of ash
This is a device or material that traps some substances and allows others to pass through…
A filter
How can mixtures be separated?
You can use physical properties such as color, shape, texture, material, and others to take out some substances of a mixture.
* for example, to separate the mixture of a bowl of M&M’s, you could make a pile of each color.
How could you separate the solid – liquid mixture of a pot containing water and spaghetti noodles?
By using a strainer to catch the noodles and drain the water out.
What physical property do filters used to separate mixtures?
Filters separate a mixture by the size of its parts
How could a magnet be used as a filter?
It could pick up only the objects in a mixture that have iron.
Metal is often mixed with rock on the earth. How could the metal be separated from the rock?
The rocks can be heated until the metal melts and flows away.
How could you separate a sand and salt mixture?
- Add water to the sand and salt mixture.
- The salt will dissolve and seem to disappear.
- Then, strain the salt from the salty water
Is there a mixture?
Yes, it is made up of different gases
Anything that has mass and takes up space.
Matter
