Star Ctiy Science Unit 2

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

The ability to react with oxygen is an example of ____

chemical property

A bonfire is an example of the property of ______

combustibility

Color is a ______ property.

physical

Glass breaking

physical

Sorting and seperating are ways to classify matter using __________ properties

physical

Sratching a silver teaspoon is a _____ change

physical

ammonia is a gas at room tepmerature

physical

crushing a can

physical

cutting grass

physical

hammering wood together

physical

melting butter

physical

water boils at 100 degrees Celsius

physical

You can seperate sugar from sand because sugar is _______ and sand is not.

soluble in water

Density

the amount of mass a material has in a given volume

vinegar reacts with baking soda

chemical

wood is flammable

chemical

Physical Property

Any characteristic of a material that can be observed or measured without changing the identity of the material

Chemical Property

Any characteristic that gives a substance the ability to undergo a change that results in a new substance

Why is classifying according to chemical properties difficult?

Because a substance must be changed to observe these properties

You need to paint iron lawn furniture that has been left outside. What property makes this necessary? If the paint is chipped, what happens?

Iron reacts with oxygen. If the paint chips it will rust.

What chemical property does sliced fruit have and why?

It has the ability to react with oxygen. You can tell because the fruit turns brown.

Is whipping cream a chemical or a physical change? Why?

It is a physical change because the cream is still cream.

A dish of sugar and water solution has been left in the sun. After a few days, the solution has disappeared and a white residue remains in the dish. Is this a physical or chemical change? Why?

It is a physical change. The water has evaporated and only the sugar is left.

Bromine has a red color

Physical

Boiling Point

The temperature at which a liquid becomes a gas

A cake baking is an example of a _______ change.

chemical

A change in colore is evidence of a _____ change.

chemical

A substnaces __________ properties predict how it will react with other substances.

chemical

Flammability is a _____________ property.

chemical

Frying a hamburger is a ______ change

chemical

When a peeled banana turns black it is a ______ change

chemical

a rusting bicycle

chemical

bleaching your hair

chemical

burning leaves

chemical

fireworks exploding

chemical

frying an egg

chemical

Density

is a physical property

Mass

is physical property

The mass of the products of a chemical reaction is ________ the mass of the reactants

the same as

Where a sugar and water solution is evaporated, the sugar left behind has less mass than the original solution. The missing mass iis found in the __________ __________.

water vapor


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