Answer:
A solid, since it is the only type of matter that has definite volume and shape.
True
Explanation: Covalent bonds occur when electrons are shared between two atoms. A single covalent bond is when only one pair of electrons is shared between atoms.
Answer:
Nucleus
Explanation:
The atom is mainly formed by three particles: Protons, neutrons and electrons. While the first two are inside of the nucleus, the latter orbit around it. Also, protons and neutrons have a relative mass of 1, compared to the electrons which mass is only 0.0005.
Answer:
37
Cl
17
(37 is a superscript to the left of the symbol, and 17 is a subscript to the left of the symbol)
Explanation:
1) Chlorine-37 is the chlorine isotope with mass number 37.
2) The atomic mass of chlorine is 17. All the atoms of chlorine have the same atomic number (all the atoms of an element have the same atomic number). You find this number in a periodic table.
3) The isotope representation consists of:
i) The symbol of the element (Cl in this case) at the center of the representation.
ii) The mass number (37) as a superscript to the left of the symbol. That is:
37
Cl
iii) The atomic number (17) as a subscript to the left of the symbol. That completes the representation in this form:
37
Cl
17
Answer:
Algor mortis is the change which is an immediately sign of death. It involves the cooling of body. The body temperature decreases as the body after death looses the control over the circulation and exchange of gases and the control over the homeostasis. The temperature decreases until the body attains equilibrium with the external environmental temperature. The postmortem cooling or algor mortis gets fixed by 8- 10 hours after death. The temperature of the body after death can be used to determine the time since death. This can be measured by determining the temperature of the rectum which is proved to be most accurate or any other orifice such as nasal, ear and vaginal can also be used.
