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
Alinara [238K]
2 years ago
13

Answer the questions below:

Chemistry
1 answer:
Allushta [10]2 years ago
4 0

Answer:

1. some thing that has matter is an apple, a person,a table. things that does 2.not Light.,Sound.,Heat.Energy.Gravity.Time.A Rainbow.Love.

3. Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

4.A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products!

5.Precipitate: In chemistry, a solid formed by a change in a solution, often due to a chemical reaction or change in temperature that decreases solubility of a solid. In meteorology a precipitate is liquid or solid water (rain, snow, etc.) falling from the sky.

6.n simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.

hope this help plz give me a thxs and brainlyest and a five star thx and you welcome let me know if this helped

Explanation:

You might be interested in
Why is gunshot residue important for a forensic scientist? What are the potential complications with this type of evidence?
erik [133]
A residue from a gunshot is most likely gun powder, which tells you what kind of bullet was shot and the type of gun that was used to shoot the target/victim/person. Some complications may be that there is more than one gun or weapon which uses that residue, so it may be hard to pinpoint it and the bullet can't really tell you who it is unless there's DNA on the bullet, and the chemicals of the bullet may even destroy evidence.
3 0
3 years ago
Read 2 more answers
Which type of structure do most ionic compounds form
Setler79 [48]

Answer: crystalline solid

Explanation: Most ionic compounds exist in crystalline solid form especially at room temperature.

4 0
3 years ago
When may a scientific theory be revised?
Anika [276]

Answer:

it can be revised at any time.

Explanation:

6 0
3 years ago
Read 2 more answers
What is the volume of an object with the height of 2cm, a width of 4cm, a mass of 20g, and a length of 5cm?
kotegsom [21]

Answer:

d

Explanation:

7 0
2 years ago
Read 2 more answers
What type of substance is steel
MrRa [10]

Answer: steel is an alloy of carbon and iron

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the density of an object with a mass of 7.92g and a volume of 3.25mL? 
    9·1 answer
  • How to find the concentration and equilibrium and the pH for a acid solution when you have 0.20M and the Ka
    11·1 answer
  • In the following redox reaction which is the oxidizing agent and which is the reducing agent? AlCl3 + Na NaCl + Al
    5·1 answer
  • Calculate the mass, in grams, of Al(OH)3 required for this reaction:
    6·1 answer
  • Which element is found in nature only in compounds? A. sodium B. helium C. oxygen D. nitrogen
    11·2 answers
  • 2 H2O2(aq) ----> 2 H2O(l) + O2(g) in the presence of I-(aq) is proposed to be: Step 1 (slow): H2O2 + I- -----> H2O + OI- S
    5·1 answer
  • Write the two balanced equations, one for the incomplete combustion of methane (to form carbon monoxide and water vapor), and an
    5·1 answer
  • Which of the following is not an important use of geological hazard maps?
    15·1 answer
  • How do birth and death rates affect a population size?
    12·1 answer
  • The light traveled from _____________________ to __________________. (What transparent materials?)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!