1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexgriva [62]
3 years ago
7

A silver ring reacts with compounds containing sulfur in the air to form silver sulfide, a black substance that makes up the tar

nish on the surface of silver objects. To remove that tarnish from the ring, students placed it in a pan lined with aluminum foil and added hot water. Baking soda was added to the hot water and stirred. Students made observations about the process. Which observation of this process provides evidence of a chemical reaction? *
A- Hot water heated the aluminum foil
B- The liquid solution changed color
C- The pan was lined with aluminum foil
D- The hot water cooled
Chemistry
2 answers:
MatroZZZ [7]3 years ago
6 0
I think the answer is b
bearhunter [10]3 years ago
5 0

Answer: B

Explaination:  The liquid solution changed color means is turned into a different substance with different properties. It is chemical change .

You might be interested in
The coriolis effect happen when
Schach [20]
When global winds, ocean currents, and other forces move freely across the earths surface.
3 0
3 years ago
What is the mass of one mole of product? (Remember the law of conservation of mass)
denis23 [38]

Answer:

To calculate the no. of moles you must know mass and molar mass of the product

Explanation:

# of moles = mass/molar mass

4 0
2 years ago
Can swords shatter from cold temperatures
sp2606 [1]
Depends on how the sword is made, what materials are used and temperature used but yes they can shatter.

When molecules cool down they stop vibrating and moving as much and so they "shrink" and the metal of the sword becomes brittle. sometimes they shrink at different phases which cause tension in the sword if this tension is strong enough it can cause the metallic bonds to break causing the sword to shatter.

hope that helps 
6 0
3 years ago
What is the correct electron configuration of the element with atomic number 20?
IgorLugansk [536]

Answer:

D is the correct answer

s orbital contain 2

p orbital contains 6

3 0
3 years ago
When will Le Chatelier's principle come into effect?
True [87]
If u disturbed equilibrium position then this principal comes into effect deciding how to counteract the disturbance.
6 0
4 years ago
Other questions:
  • A 642 mL sample of oxygen gas at 23.5°C and 795 mm Hg, is heated to 31.7°C and the volume of the gas expands to 957 mL. What is
    13·1 answer
  • Problem page a virus has a mass of ×9.010−12mg and an oil tanker has a mass of ×3.0107kg . use this information to answer the qu
    5·2 answers
  • Where are the most reactive metals on the periodic table? to the far right in the middle at the top to the far left
    7·2 answers
  • below are three reactions showing how chlorine from CFCs (chlorofluorocarbons) destroy ozone (O3) in the stratosphere. Ozone blo
    6·1 answer
  • The initial temperature of three moles of oxygen gas is 32.5°C, and its pressure is 6.60 atm. (a) What will its final temperatur
    6·1 answer
  • How many moles of hydrogen are in a 14 gram sample of propane gas?
    6·1 answer
  • Someone sprays perfume in another room. It can be smelled a few minutes later.
    9·2 answers
  • The process of asking questions is known as
    13·2 answers
  • Phenomenon: The sound of tapping on your desk is much louder and lower pitched when you listen to it with your ear pressed again
    5·1 answer
  • Calculate the percentage by mass of nitrogen in magnesium nitrate. You will need the information below. Give your answer to the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!