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
yawa3891 [41]
3 years ago
6

What are the significance of metals in human life and civilization?

Chemistry
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

Metals have an important role in our daily life. The discovery of the metal is said to be the most important milestone in the history of human civilization. We cannot live without machines now. All machines are made up of metals. Machines reduce the work of man. Many modern facilities would not have been possible without metals. Most metals occur as their compounds in nature.

You might be interested in
Help me answer this please
Vlad1618 [11]
Its a scam dont press the link
3 0
2 years ago
List the protons, neutrons, and electrons for Ge2+<br> Please hurry
Nady [450]

Answer:

32, 30 and 41

Explanation:

The problem here is to find the number of:

    Protons, neutrons and electrons in Ge²⁺

In this ion,

   We must understand that for a net positive charge to remain on an atom, the number of protons must be greater than the number of electrons.

Ge is Germanium with atomic number of 32;

So the number of protons is 32

Since the atom has lost two electrons;

  Number of electrons now is 32  - 2 = 30

Number of neutrons is 41 from the periodic table.

7 0
2 years ago
Which of the following statements is NOT a part of John Dalton's atomic theory?
Goshia [24]

The statement that is NOT a part of John Dalton's atomic theory Electrons move in specific orbits around the nucleus of an atom. The statements ‘All elements are composed of atoms that cannot be divided’, ‘All atoms of the same element are exactly alike and have the same mass’ and ‘Every compound is composed of atoms of different elements, combined in a specific ratio’ are not his theory.

7 0
3 years ago
A student combines 20.0 grams of hydrogen and 20.0 grams of oxygen in a reaction. According to the law of conservation of mass,
jekas [21]

Answer:

A)20.0grams

Explanation:

4 0
3 years ago
Read 2 more answers
The gold foil experiment resulted in two major discoveries which were made about the structure of the atom. what were they
DanielleElmas [232]
It showed that the nucleus is positively charged, and that the atom isn't just made of electrons.
8 0
3 years ago
Other questions:
  • Assume that 8.5 L of iodine gas (I2) are produced at STP according to the following balanced equation:2KI(aq) + Cl2(
    5·2 answers
  • Cecil is working with samples of chlorine (CI), oxygen (O), bromine (Br), and silver (Ag). The samples are all at room
    13·2 answers
  • Draw the curved arrow mechanism for the addition of HCN in water with NaOH to heptan-4-one to give the corresponding cyanohydrin
    6·1 answer
  • How many milliliters of 11.5 M HCl(aq) are needed to prepare 855.0 mL of 1.00 M HCl(aq)?
    8·1 answer
  • Which of the following is generally FALSE? Group of answer choices Elements in the same group have the same valence electron con
    14·1 answer
  • Write the balanced equation for the formation of the Grignard reagent from bromobenzene.
    12·1 answer
  • Calculate the speed of a wave that has a wavelength of 8 meters and a frequency of 16 meters per second (m/s).
    5·2 answers
  • Identify each described physical separation technique. a liquid is carefully poured out, leaving the solid behind in the contain
    14·2 answers
  • Describe 2 ways of salting out proteins ​
    8·1 answer
  • Why do you add hydroxide to your hexanediamine solution? what would occur if you did not add it?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!