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
Nadusha1986 [10]
3 years ago
7

Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that

a chemical change has occurred in the substance?
If the substance is a liquid or solid, an increase in temperature would indicate a chemical change.
If the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change.
If the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change.
If the substance is a liquid or solid, production of an odor would indicate a chemical change
Chemistry
2 answers:
victus00 [196]3 years ago
6 0

Answer:

D

Explanation:

the production of an odor would indicate that the heat ignited a chemical reaction

german3 years ago
5 0

The correct answer to the question is:

If the substance is a liquid or solid, production of an odor would indicate a chemical change

A chemical change is a change which is not easily reversible and in which a new substance. For example burning of substance, decay of substance etc

A physical change is a change which is easily reversible and no new substance is form. For example change of states of matter.

With the above information in mind, we can see that the correct answer to the question is: If the substance is a liquid or solid, production of an odor would indicate a chemical change

All other options represent a physical state.

Learn more: brainly.com/question/11974489

You might be interested in
What continent has no deserts
nevsk [136]

Answer:

Antarctica.

Explanation:

It’s all ice.

4 0
3 years ago
Phosphodiesterase functions Select one: a. as a membrane-bound receptor molecule. b. to inactivate cyclic AMP. c. to attach phos
ikadub [295]
Cyclic nucleotides cAMP and cGMP are part of almost all major cellular signaling pathways. Phosphodiesterases (PDEs) are enzymes that regulate the intracellular levels of cAMP and cGMP. Protein kinase A or cAMP-dependent protein kinase mediates most cAMP effects in the cell. Over the last 25 years, various components of this group of molecules have been involved in human diseases, both genetic and acquired. Lately, the PDEs attract more attention. The pharmacological exploitation of the PDE’s ability to regulate cGMP and cAMP, and through them, a variety of signaling pathways, has led to a number of new drugs for diverse applications from the treatment of erectile dysfunction to heart failure, asthma, and chronic obstructive pulmonary disease. We present the abstracts (available online) and selected articles from the proceedings of a meeting that took place at the National Institutes of Health (NIH), Bethesda, MD, June 8–10, 2011.

8 0
3 years ago
What are the oxidation numbers for HCL
prisoha [69]
Here's the numbers
H = +1 
Cl = -1
5 0
3 years ago
How many molecules of atp are produced as a result of glycolysis
Whitepunk [10]

Answer:

2 ATP molecules are produced

8 0
2 years ago
Read 2 more answers
How many kilograms of oseltamivir would be needed to treat all the people in a city with a population of 400000 people if each p
enyata [817]

Answer:

300 kg

Explanation:

The give parameters obtained from a similar question are;

The mass of oseltamivir per capsule = 75 mg

The mass of oseltamivir required, <em>M</em>, is given as follows;

M = The mass of oseltamivir per capsule × The mass taken per person per day × 5 days × The number of people in the city

M = 0.75 mg/capsule × 2 capsule/(day·person) × 5 days × 400,000 people

M = 300,000,000 mg = 300 kg

6 0
3 years ago
Other questions:
  • What implications need to be considered when creating environmental policies?
    7·2 answers
  • Which one of the following is the net ionic equation for the reaction of nitric acid with aluminum hydroxide
    14·1 answer
  • Determine whether each of these reactions occur through an S N 1 , S N 2 , E1, or E2 mechanism. A. A tertiary alkyl halide is tr
    14·1 answer
  • Calculate the height of a column of liquid benzene (d=0.879g/cm3), in meters, required to exert a pressure of 0.790 atm .
    7·2 answers
  • Which particle changes to create an isotope of an atom? <br> A.proton<br> B.neutron<br> C.electron
    5·1 answer
  • Classify each property as intensive or extensive. Color, temperature, volume, hardness, mass, boiling point, length, density
    12·2 answers
  • A chemist needs 0.550 mol selenium for a reaction. What mass of selenium should a chemist use?
    15·1 answer
  • Which group of the Periodic Table contains element T?
    10·1 answer
  • What do you expect would happen to the pressure of the gas in a container as the volume is decreased
    9·1 answer
  • Which of the following is NOT needed for photosynthesis to take place?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!