5th - Science Unit 1 Lesson 2 Flashcards
(31 cards)
What are some examples of chemical properties?
Flammability, corrosion, photosynthesis. Anything that describes the way a substance reacts to other substances (more or less reactive)
What are some examples of physical properties?
Mass, weight, volume, conduction, magnetism, light transmission, density, color. Anything you can observe about on object.
What are some examples of qualitative properties?
Color, odor, state (solid, gas, liquid), texture, luster, and malleability
What are some examples of quantitative properties?
Mass, melting point, boiling point
Know the difference between mass, weight, and volume.
Mass is the amount of matter in an object. Weight is how strongly gravity pulls on an object. Volume measures how much space matter takes up.
Be able to explain why the weight of an object will be different on a planet with different gravitational pull.
Weight is how strongly gravity pulls on an object. If an object has more mass, it will also have more weight. Gravity is greater on planets with more mass, so an object’s weight depends on the planet it is on. An object’s mass, in contrast, is the same on different planets.
What is used to measure mass, weight, and volume?
Mass is measured on an equal pan balance. Weight is measured on a scale. Volume is measured by multiplying the object’s length by its width by its height.
What units is mass, weight, and volume usually given in?
Mass is usually given in kilograms or grams. Weight is usually given in newtons or pounds. Volume is usually given in milliliters or cubic centimeters.
How do you find the volume of a regularly shaped solid?
You can calculate the volume of a regularly shaped object such as a rectangular solid by multiply the object’s length (L) by its width (W) by its height (H): L x W x H.
How do you find the volume of an irregularly shaped solid?
You can measure the volume of an irregular shaped solid by using water in a graduated cylinder or beaker. The change in the water level when an irregular object is placed under water.
What is the formula to calculate density?
To calculate density, you divide its mass by is volume.
Density = mass / volume
Which property describes why an object floats?
Objects can float as a result of buoyancy, it’s resistance to sinking.
Know when an object will float in water and when an object will sink in water.
If an object is denser than the liquid, then the object can push harder and it sinks. If the liquid is denser than the object, then the liquid can push harder and the object floats.
What is the movement of light through a substance such as air or water?
Light transmission
What is it called when an object or substances allows most light to pass through? Examples are air, glass and water.
Transparent
What are objects or substances called that blur light as it passes through? Examples are waxed paper, ice, and frosted glass.
Translucent
What are objects or substances called that allows little or no light to pass through? Examples are wood, rubber and metal.
Opaque
What is conduction?
Conduction is the passing of heat through a material while the material itself stays in place. It occurs between objects that are touching. When touching a seat belt on a hot day, the metal buckle feels hotter than the cloth strap.
If given a picture of an object in a graduated cylinder, be able to tell its volume.
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What is the difference between an alkali metal and an alkaline earth metal?
Alkali metals easily form compounds with other substances and never exist by themselves in nature. Alkaline earth metals are not as reactive as alkali metals and are essential to many living organisms.
Be able to explain why the temperature at which a substance boils or freezes is classified as a physical property and not a chemical property.
Because that is when a substances changes form
Matter can be described by its ______________ and its ___________________ which are physical properties.
Color and texture
What is used to identify matter without changing its identity?
Physical properties
What is the amount of matter in an object?
Mass
