Questions LLC
Login
or
Sign Up
Ask a New Question
Science
Chemistry
Chemical Reactions
Which of the following is a reliable way to observe that a chemical change has occurred when two substances come in contact with one another?
1 answer
A reliable way to observe that a chemical change has occurred when two substances come in contact with one another is to look for the formation of a precipitate, the production of gas, a color change, or the generation of heat or light.
You can
ask a new question
or
answer this question
.
Related Questions
A student cuts some fabric into two pieces. Is this change physical or chemical?(1 point)
Responses It is a chemical change
What is the difference between a chemical change and a chemical reaction??
My answer: A chemical change leads to a solidifed
1. A ____________________ occurs when two or more substances interact forming a new substance.
A. Physical change B. Chemical
A student cuts some fabric into two pieces. Is this change physical or chemical?(1 point)
Responses It is a chemical change
A student cuts some fabric into two pieces. Is this change physical or chemical? (1 point)
It is a physical change because the
Examine the photos of the maple tree becoming maple logs:
: Claim - Is this a chemical change or a physical change? (1 point)
15. The main difference between a physical and chemical change is that a physical change only alters the physical properties of
A student cut some fabric into two pieces is this chemical change or physical change?
A. It is chemical change because the size
Physical vs. Chemical Change Quick Check
Science 8 Q1 / Matter Interactions Which observation most likely indicates that only a
All of the following are indicators of a chemical change except:
heat production color change phase change ** bubbling or fizzing