Answer:
A new substance was forming
Explanation:
Two types of changes are undergone by substances involved in a reaction. They are physical changes and chemical changes. Physical changes are those changes that does not involve the synthesis of a new product. On the other hand, CHEMICAL CHANGES alters the chemical composition of the substances involved, and hence, new substances are formed.
Chemical changes are usually characterized by change of temperature, color change, evolution of a gas etc. According to this question, Mia mixed two substances in a test tube and noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, a CHEMICAL CHANGE, LEADING TO THE FORMATION OF NEW SUBSTANCE, HAS OCCURRED.
The main difference between muscle and nerve cells is their structure and function. Muscle cells form muscle tissues which contract and relax muscles both voluntarily and involuntarily. Nerve cells form nervous tissues which rapidly receive and analyze information from a person's environment to produce an appropriate response.
Explanation:
An alpha particles is basically a helium nucleus and it contains 2 protons and 2 neutrons.
Symbol of an alpha particle is .
A beta particle is a particle with a negatively charged electron. Symbol of a beta particle is .
According to the given question, the decay series chart along with reaction equation are as follows.
(a) Lead-214 changes to bismuth-214.
(b) Bismuth-214 changes to polonium-214.
(c) Polonium-214 changes to lead-210.
Therefore, we can conclude that proper order of nuclear particle emission is beta, beta, alpha.