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Heat and Classification of Matter
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Blood is homogeneous or heterogeneous?
heterogeneous
Chocolate drink is homogeneous or heterogeneous?
homogeneous
vinegar is homogeneous or heterogeneous?
homogeneous
Air is homogeneous or heterogeneous?
homogeneous
What do you know about mixtures? Give three examples.
Substance that contain more than one type of substances: cereal in milk, boba drink, soda.
What do you know about pure substance? Give three examples.
Substance that contain only one type of substances: water, salt, sugar.
Mention three sources of heat!
The sun, fire, stove, etc
What type of the substances above?
heterogeneous
What type of the substances above?
heterogeneous
What type of the substances above?
heterogeneous
Cooking oil and vinegar are examples of … mixture.
homogeneous
Salad and pizza are examples of … mixture.
heterogeneous
The diagram is shows ....
Compound
Water (H2O) / Salt (NaCl) / Carbon (C) - Which one is an element?
Carbon (C)
Two molecules of oxygen (O2) is the example of ….
elements
Pure substances are classified to ….
elements and compounds
Give two examples of pure substances?
salt and sugar
… contain two or more substances that are not chemically combined.
Mixture
… contain only one substance.
Pure substances
Heat moves from … to ….
hot to cold
You sit around a campfire to stay warm because it's … heat.
radiates
A pot is placed directly on a stove. The pot gets hot because of ….
Conduction
What is the heat transfer in the room above?
Convection
The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of ….
Conduction
What materials that include as insulators?
Plastic, Rubber, Fabric, Wood, etc
What materials that include as conductors?
Iron, Steel, Copper, Silver, Brass, and most of metal
Heat can be transferred from one object to another in 3 different ways
conduction, convection, and radiation
What electricity that create heat?
microwave, oven, ricecooker, etc
What is the source of heat?
The sun, stove, fire, etc
Tools to measure the degree of hotness or coldness of an object are ....
Thermometers
A form of energy that makes things hot is ...
Heat / Thermal
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