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
densk [106]
3 years ago
14

Help me pls

Chemistry
1 answer:
harkovskaia [24]3 years ago
3 0

Answer:

this is answers to the second picture

Explanation:

1-   energy

2- structure

3- reaction

4- substance

5- reactants

6- products

7- changed

8- At first there is no reaction because of the protective oxide coating on the aluminum. But soon an exothermic reaction between bromine and aluminum causes brown fumes of bromine to be given off. But as a new substance, aluminum bromide is produced. White smoke is produced.

9-   heated to 120 degrees Celsius it melts and first forms a pale-yellow liquid.

In this form the atoms are covalently bonded, and the liquid can flow easily. However, heated up beyond 150 degrees Celsius, the result is a dark red

10- When a chemical change occurs it is more difficult to revert the substance back to its original state. (To be honest I don't know)

You might be interested in
Nuclear physicists have discovered over 100 different particles that compose the nucleus of an atom. From a chemistry perspectiv
Julli [10]

Answer:

Protons and neutrons which packed tightly into central core of the atom.

Explanation:

Atoms are composed of three subatomic particle; electron, proton and neutron. Electrons are negatively charged, protons are positively charged whereas neutrons are neutral, hence does not have any charge.

Out of three, protons and neutrons are present in the nucleus of the atom.

Nucleus is the central part of the atom possessing most of the mass of the atom. In the nucleus, protons and neutrons are tightly packed with the help of nuclear force.

Electrons are present around the nucleus also called electron cloud.

Therefore, nucleus are composed of protons and neutrons which packed tightly into central core of the atom

4 0
3 years ago
if scientist had tried to repeat Thomson's experiment and found that they could not, would Thomson's conclusion still have been
Mariulka [41]
It wouldn’t, it must be at least 96% close to what Thomson did to make the Conclusion valid, it must be repeated the same and tested by another person at least 3 times. Hope this helps, mate! :)
3 0
3 years ago
Hello- please answer
vlabodo [156]


Electric current is when electrons start to flow around a circuit. We use an ammeter to measure it and it is measured in amps
Potential difference (also called voltage) is how big the push on the electrons is. We use a voltmeter to measure it and it is measured in volts.
Resistance is anything that resists an electric current. It is measured in ohms”.
(Words: volts, amps, ohms, voltage, ammeter, voltmeter).
8 0
3 years ago
Determine the approximate mass of the isotope of carbon in the image.
avanturin [10]
The answer is gonna be D I believe
7 0
3 years ago
H2O is polar covalent or its Hydrogen bond??? PLEASE HELP!!!
Annette [7]

Answer:

Polar covalent.

Explanation:

The covalent bonds are therefore polar, and the oxygen atoms have a slight negative charge (from the presence extra electron share), while the hydrogens are slightly positive (from the extra un-neutralized protons). Opposite charges attract one another.

6 0
3 years ago
Other questions:
  • According to the Law of Conservation of Mass, how many grams of product will be produced when 4 grams of reactants are involved
    8·1 answer
  • If you have a small mineral sample, why might testing for cleavage be one of the last things you do?
    8·1 answer
  • Draw the product of the following reaction between a ketone and an alcohol.
    9·1 answer
  • Determine the molarity of 50 mL of HCl solution with unknown concentration, titrated with 75 mL of 4.0 M NaOH.
    15·1 answer
  • Given the atomic weights of carbon, 12.01; hydrogen, 1.01; and oxygen, 16.0, what is the molar mass of glucose?
    7·2 answers
  • Will a marble keep rolling forever on a flat hardwood floor?
    6·1 answer
  • A schoolbus accelerates to 65 mph and enters the freeway. It travels
    14·1 answer
  • The mass number of an atom can be calculated from the
    9·1 answer
  • All of the matter in the universe formed after the big bang. Scientists
    11·2 answers
  • The reaction 2NO(g) + O2(g) → 2NO2(g)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!