Question and answer
What type of substance is a catalyst? A. always a gas B. always a liquid C. always a powder D. A catalyst can be in many forms.
Question|Asked by chantie04
Asked 7/19/2016 7:10:17 AM
Updated 7/19/2016 7:28:46 AM
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This answer has been confirmed as correct and helpful.
Edited by jeifunk [7/19/2016 7:28:45 AM], Confirmed by jeifunk [7/19/2016 7:28:46 AM]
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User: What type of substance is a catalyst? A. always a gas B. always a liquid C. always a powder D. A catalyst can be in many forms.

Weegy: A catalyst can be in many forms.

jessrebueno|Points 240|

User: Which increases the rate of a chemical reaction? A. a catalyst B. a higher volume C. a lower pressure D. a lower temperature

Weegy: A CATALYST increases the rate of a chemical reaction.



Question|Asked by chantie04
Asked 7/19/2016 7:10:17 AM
Updated 7/19/2016 7:28:46 AM
0 Answers/Comments
This answer has been confirmed as correct and helpful.
Edited by jeifunk [7/19/2016 7:28:45 AM], Confirmed by jeifunk [7/19/2016 7:28:46 AM]
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Questions asked by chantie04
Exit What makes simple machines useful for people without enough strength to complete a task? A. Work is reduced, while time is decreased. B. Input force is reduced, while time is increased. C. Power is increased, while distance is decreased. D. Input force is reduced, while distance is increased.
Question|Asked by chantie04
Updated 11/4/2016 4:39:58 AM
1 Answer/Comment
Work is reduced, while time is decreased makes simple machines useful for people without enough strength to complete a task.
Added 11/4/2016 4:39:58 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [11/4/2016 12:13:46 PM]
Which characteristic of an acid is the basis of the scientific definition of acidity? A. its ability to change the color of litmus paper to red B. its ability to produce hydrogen ions in water C. its ability to corrode metals D. its ability to taste sour
Weegy: Its the ability to change the color of litmus paper to red s the basis of the scientific definition of acidity. User: Which compound is a base? A. soap B. vinegar C. sour milk D. lemon juice Weegy: Soap is a base. User: Hydrochloric acid (HCl) and sodium hydroxide (NaOH) will react to form which two compounds? (More)
Question|Asked by chantie04
Updated 7/13/2016 6:34:50 PM
0 Answers/Comments
Which statement is true about physical changes and chemical changes? A. Chemical changes are not observable. B. Chemical changes always produce new substances. C. Physical changes can change physical and chemical properties. D. Physical and chemical changes cannot happen at the same time.
Weegy: The true statement is that - Chemical changes always produce new substances. User: A substance that readily burns when it comes into contact with a flame has the chemical property of _____. A. toxicity B. stability C. reactivity D. combustibility Weegy: A substance that readily burns when it comes into contact with a flame has the chemical property of Combustibility. User: The pH of an acidic substance is between what values on the pH scale? A. 0 and 14 B. 0 and 7 C. 7 and 14 D. greater than 14 Weegy: The ph of an acidic substance is between 0-7. (More)
Question|Asked by chantie04
Updated 7/15/2016 8:29:00 AM
0 Answers/Comments
Which of the following is a physical property of water? A. Water has a pH of 7. B. Water is not flammable. C. Water reacts with sodium. D. Water is a liquid at room temperature.
Weegy: Water is a liquid at room temperature is a physical property of water. User: Which of the following is always true when a substance undergoes a physical change? A. the composition changes B. a change in color occurs C. no new substance is formed D. its specific gravity remains the same (More)
Question|Asked by chantie04
Not Answered
Updated 7/15/2016 8:11:42 AM
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Atoms with the same atomic number but different atomic mass are called A. prototypes. B. subtypes. C. isotopes. D. ions.
Weegy: Atoms with the same atomic number but different atomic mass are called Isotopes. User: How many neutrons are in an atom of sulfur with a mass number of 35? A. 16 B. 17 C. 18 D. 19 Weegy: There are 19 neutrons in an atom of sulfur with a mass number of 35. User: Which element has an isotope mass number of 32 and is used to label proteins? A. oxygen B. carbon C. phosphorus D. sulfur Weegy: phosphorus has an isotope mass number of 32 and is used to label proteins. (More)
Question|Asked by chantie04
Updated 7/18/2016 3:08:37 PM
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