Element, compound, or mixture? Classify the following materials as an element compound or mixture....
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![Page 1: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/1.jpg)
Element, compound, or mixture?
Classify the following materials as an element compound or mixture.
Give reasons for your answers.
a. Table salt (NaCl)
b. Salt water
c. Apple juice
d. Water (H2O)
e. Helium gas (He)
![Page 2: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/2.jpg)
Lecture 2.4- Chemical changes
![Page 3: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/3.jpg)
A magnet separates iron from sulfur.
During a physical change, the composition of matter never changes.
Physical Changes
![Page 4: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/4.jpg)
Chemical Changes
A mixture of iron and sulfur is heated.
The iron and sulfur react and form iron sulfide.
During a chemical change, the composition of matter ALWAYS changes.
![Page 5: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/5.jpg)
Recognizing Chemical Changes
It is usually a chemical change if there is :
![Page 6: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/6.jpg)
Recognizing Chemical Changes
It is usually a chemical change if there is :•a transfer of energy (ex. heat or light)
![Page 7: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/7.jpg)
Recognizing Chemical Changes
It is usually a chemical change if there is :•a transfer of energy (ex. heat or light)
•a change in color
![Page 8: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/8.jpg)
Recognizing Chemical Changes
It is usually a chemical change if there is :•a transfer of energy (ex. heat or light)
•a change in color
•production of a gas
![Page 9: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/9.jpg)
Recognizing Chemical Changes
It is usually a chemical change if there is :•a transfer of energy (ex. heat or light)
•a change in color
•production of a gas
• formation of a precipitate.
![Page 10: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/10.jpg)
A precipitate is a solid that forms and settles out of a liquid mixture.
![Page 11: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/11.jpg)
A chemical change is also called a chemical reaction.
![Page 12: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/12.jpg)
A chemical change is also called a chemical reaction.
»A substance present at the start of the reaction is a reactant.
![Page 13: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/13.jpg)
A chemical change is also called a chemical reaction.
»A substance present at the start of the reaction is a reactant.
»A new substance created by the reaction is a product.
![Page 14: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/14.jpg)
A chemical change is also called a chemical reaction.
»A substance present at the start of the reaction is a reactant.
»A new substance created by the reaction is a product.
Fe + S FeSiron sulfur iron sulfide
![Page 15: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/15.jpg)
A chemical change is also called a chemical reaction.
»A substance present at the start of the reaction is a reactant.
»A new substance created by the reaction is a product.
Fe + S FeSiron sulfur iron sulfide Reactants Product
![Page 16: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/16.jpg)
Chemical Changes
The ability of a substance to undergo a specific chemical change is called a chemical property.
![Page 17: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/17.jpg)
Chemical vs. Physical PropertiesQuickTime™ and a
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![Page 18: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/18.jpg)
Conservation of Mass
LAW of Conservation of Mass–
During any chemical reaction, the mass of the products is always equal to the mass of the reactants.
![Page 19: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/19.jpg)
The conservation of mass is easily observed when a change occurs in a closed container.
![Page 20: Element, compound, or mixture? Classify the following materials as an element compound or mixture. Give reasons for your answers. a.Table salt (NaCl) b.Salt.](https://reader036.fdocuments.us/reader036/viewer/2022082205/5697bf7c1a28abf838c84078/html5/thumbnails/20.jpg)
Conservation of Mass
QuickTime™ and aYUV420 codec decompressor
are needed to see this picture.