2. Scientific Law
3. Chemistry
4. Experiment
Molecular compounds can not conduct electricity because they do not break up into ions. Therefore, option (A) is correct.
Molecular compounds can be characterized as those compounds where the atoms are connected by covalent bonds. The covalent bond is generally created by the mutual sharing of electrons by the atoms. In molecular compounds, intermolecular forces are responsible for bond formation.
The melting point of the molecular compound is low as compared to the ionic compound as the energy required to break bonds is less compared to the ionic bond between ions in the crystalline ionic compound.
Molecular compounds are generally by the reaction between non-metals. Molecular compounds are also known as covalent compounds. The ionic and molecular compound differ from each in their physical properties,
The molecular compounds do not conduct electricity as they do not bark into ions. Therefore they can behave as insulators while ionic compounds conduct electricity.
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(2) beta particle (4) positron
Answer: (3) gamma radiation
Explanation:
An isotope can decay in 4 process:
1.) Alpha decay: In this process, alpha particles is emitted when a heavier nuclei decays into lighter nuclei. The alpha particle released has a charge of +2 units.
2.)Beta-decay: In this process, a neutron gets converted into a proton and an electron releasing a beta-particle. The beta particle released carries a charge of -1 units.
3.) Gamma ray emission: in this process, an unstable nuclei gives off excess energy by a spontaneous electromagnetic process and releases . These radiations does not carry any charge and are electrically neutral.
4.) Positron decay: In this process, a proton gets converted to neutron and an electron neutrino and releases positron particles. This particle carries a charge of +1 units.
In the question, it is given that when an isotope decays, it emits only energy. It is released when an isotope undergoes gamma decay and therefore, the correct answer is gamma radiation.
B. zinc and hydrogen carbonate.
C. zinc chloride and hydrogen.
D. zinc chlorate and water.
In the chemical reaction: Zn + 2HCl -> ZnCl₂ + H₂, the reactants are zinc, Zn and hydrochloric acid, HCl (Option A)
Chemical equations are representation of chemical reactions with symbols and formula of elements involved in the reaction.
Every chemical equation has two sides. These are:
With the above information, we can determine the reactants of the chemical equation. This is shown below:
Reactants => They are located on the left hand side of the equation
=> Zn and HCl
Thus, the correct answer to the question is: zinc and hydrochloric acid (option A)
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Answer:
a because a container is supposed to be disposed every once in a while
The question describes a type of container, likely a plastic bag or similar packaging material, which is disposable, flexible, allows for easy storage, but is also easily punctured.
The question seems to be asking about a type of
container
that is disposable, flexible, allows for easier storage, but is easily punctured. This could likely refer to something like a plastic bag or a flexible packaging material. These types of containers are often used in various industries due to their convenience and cost-effectiveness. For example, in the food industry, a plastic bag as a container is
disposable
after use,
flexible
to fit various shapes and sizes of products, allows for
easier storage
because they can be folded when not in use, but they are also
easily punctured
which can result in product damage if not handled with care.
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