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
Phantasy [73]
3 years ago
6

Which set of procedures and observations indicates a chemical change?

Chemistry
1 answer:
Flauer [41]3 years ago
4 0
The answer is (4), (3) is merely a change in composition, thus not chemical but physical.

Answer: (4).
You might be interested in
The Li2+ ion is very similar to the hydrogen atom, in that it has one electron and energy levels similar
egoroff_w [7]
Hhhhccffdfgcfghbvvbh
4 0
3 years ago
In a classroom, which comparison would a teacher most likely use for describing a mole?
a_sh-v [17]

Answer:

In a classroom, the comparison that a teacher would most likely use for describing a mole is: jar of jellybeans and a gram of salt crystals.

Explanation:

4 0
3 years ago
Why is the atomic theory a scientific one
elixir [45]

Hope this helps some

"In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. ... In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all."

5 0
4 years ago
A student creates a model that displays a cross-section of a metal wire wrapped in plastic insulation. Which statement best desc
artcher [175]

Cross-section of a metal wire wrapped in plastic insulation the metal wire is an element.

<h3>What is an element?</h3>

An element is a substance or material that cannot be affected by an external substance or cannot be broken down by any reaction.

Metal wire is serving as an element, it should not be easily broken or penetrated as an insulator.

Therefore, Cross-section of a metal wire wrapped in plastic insulation the metal wire is an element.

Learn more on element here,

brainly.com/question/18096867

7 0
3 years ago
A. what mass of chromium would be produced from the reaction of 57.0 g of potassium with 199 g of chromium (ii) bromide accordin
Sunny_sXe [5.5K]

Answer:

2 K + 1 CrBr2 yield 2 KBr + 1 Cr

Explanation:

5 0
3 years ago
Other questions:
  • How far does Outerspace go? What does it smell like?
    5·2 answers
  • Which of the following does a simple circuit require?
    6·1 answer
  • Explain in a paragraph how do you know or can find the number of each subatomic particle using the information on the periodic t
    15·1 answer
  • If a reaction is reversible what are the relative amounts of reactant and product
    10·2 answers
  • 1. Identify a conjugate acid-base pair in the reaction
    13·1 answer
  • Chemicals (and humans) are all about what
    14·2 answers
  • Part 1: Name the type of chemical reaction that occurs when aluminum (Al) reacts with copper nitrate (Cu(NO3)2).
    13·1 answer
  • Which solution would have the lowest freezing point?
    6·1 answer
  • Cuáles son las características y funciones de los organismos
    12·1 answer
  • What two properties (one chemical and one physical) combine to make bromcresol green useful as an acidity indicator?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!