"Changes in State of Matter Temperature" State of Matter and Its Changes PPT Courseware 2

Description

"Changes in State of Matter Temperature" State of Matter and Its Changes PPT Courseware 2

state of matter

Matter can be divided into three states: solid, liquid and gas.

Thinking: What are the characteristics of the state of matter?

Characteristics table of solid, liquid and gas

state shape volume

Solid state, certain shape, certain volume

Liquid, no fixed shape, certain volume

Gaseous state has no fixed shape and no fixed volume

1. What is temperature?

The degree of hotness or coldness of an object is called temperature.

2. Measurement of temperature

Relying on human perception is unreliable and inaccurate.

A thermometer is necessary for accurate measurement.

(1) Experimental thermometer

1. Structure:

Glass tubes, glass bubbles, temperature measuring liquids,

Scale (scale), unit (℃)

2. Principle:

It works according to the thermal expansion and contraction properties of the liquid.

3. Temperature expression method:

It is specified that the atmospheric pressure is 1.01×105 Pa:

The temperature of the ice-water mixture is 0 degrees;

The boiling temperature of water is 100 degrees;

Divide the temperature between 0 degrees and 100 degrees into 100 equal parts, and each equal part is called 1 degree Celsius, represented by the symbol ℃.

The temperature under this regulation is called Celsius.

practise

1. Water has fluidity. Water is a _____ body. It has a certain _____, but it does not have a certain _____.

2. After the nurse measured a patient with a thermometer, the thermometer showed "38.5 ℃". After only disinfecting with alcohol, she went to measure the temperature of a normal person. The thermometer showed ( ).

A. 37℃ b． 38.5℃ C． Unable to judge

3． A classmate used a thermometer to measure his own body temperature, and the measured result was 35°C. The reason why the measured temperature was lower than the actual temperature may be ( ).

A. The mercury was not thrown back into the glass bulb before use.

B． The thermometer is not left in the armpit long enough

C. The thermometer is not in direct contact with the body

D． Failure to read the value displayed on the thermometer promptly

4. The correct way to disinfect a thermometer is ( ).

A. Place in boiling water and cook for a few minutes

B． Rinse with tap water

C. Baking with alcohol lamp

D． Wipe with medical alcohol

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For more information about the PPT courseware "States of Matter and Their Changes, Temperature of Changes in State of Matter", please click the "States of Matter and Their Changes, Temperature of Changes in State of Matter" ppt tag.

"Changes in State of Matter - Temperature" State of Matter and Its Changes Flash Animation Courseware:

"Changes in State of Matter and Temperature" Flash animation courseware on states of matter and their changes. This courseware is a Flash animation courseware on physical states and their changes in the eighth grade volume of Beijing Normal University. It is suitable for middle school physics teaching. It has rich content and vivid animations. Please download it! Keywords: temperature of change of state of matter..

"Changes in State of Matter Temperature" State of Matter and Its Changes PPT Courseware 3:

"Changes in State of Matter - Temperature" State of Matter and Its Changes PPT Courseware 3 Knowledge Summary 1. Temperature is a physical quantity that represents ___________. 2. Commonly used thermometers measure temperature based on the property of __________. 3. The letter C on the thermometer indicates the ____ temperature, which...

"Changes in the State of Matter - Temperature" PPT courseware on states of matter and their changes:

"Temperature of Changes in State of Matter" PPT courseware on states of matter and their changes [Experience 1] Activities on states of matter and changes in matter: Review the knowledge about states of matter in primary school textbooks (1) Water has three states, which are liquid _________ and solid state. The ________ and the gaseous ________..

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Update Time: 2024-11-25

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume one industry PPT template

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