Answer:
Matter is composed of indivisible building blocks. ... The Greeks called these particles atomos, meaning indivisible, and the modern word “atom” is derived from this term. Democritus proposed that different types and combinations of these particles were responsible for the various forms of matter.
I hope this helped
The property of a substance stays ______________ no matter how the substance is used.
Any substance changes to another substance that means the change of the physical property. Like water () has different state which changes as the temperature changes. It remain as liquid in the room temperature, in solid form at or below 0°C and vapor phase on or above 100°C. But in all the stage or phase of the substance the composition of the water i.e. remains. Thus the chemical property remains fixed when a substance change to other substance.
What are 3 characteristics of a mixture?
Answer:
The substances in a mixture can be separated using physical methods such as filtration, freezing, and distillation.
There is little, see Enthalpy of mixing, or no energy change when a mixture forms.
Mixtures have variable compositions, while compounds have a fixed, definite formula.
Explanation:
An ice cube has a volume of 12cm3 and a mass of 11g. What is the density of the ice?
Answer:
find the volume of the ice cube then using the formula density=mass over volume calculate the density okay
The density of the object is mass per unit volume. Density is directly proportional to mass and inversely proportional to volume. . The density of the object is 0.916 g/ cm3
What is density?Density is defined as mass per unit volume of the object. If the mass of the object increase then the density will increase. If the volume of the object decrease then the density will increase.
Density = Mass / volume
= 11 g/ 12 cm3
= 0.916 g/ cm3.
Therefore, The density of the object is mass per unit volume. Density is directly proportional to mass and inversely proportional to volume. The density of the object is mass per unit volume. The density of the object is 0.916 g/ cm3.
To learn more about density, refer to the link:
https://brainly.com/question/15164682
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What should scientists do after completing a scientific investigation?
write a hypothesis
confirm the results
design the procedure
make observations
Answer:
Confirm the results
Explanation:
Answer:
its the answer from the guy above me so its B
Explanation:
Can someone help me with this ASAP?
How many energy levels does the element helium have?
I appreciate the help!
Baby steps in science occur small bits of__ gradually accumulate
Answer:
Baby steps in science occur small bits of__ gradually accumulate
Explanation:
Baby steps in science occur as small bits of evidence gradually accumulate. The evidence lets scientists refine and expand on earlier ideas.
The atomic weight of iodine is less than the atomic weight of tellurium. However, Mendeleev listed iodine after tellurium in his original periodic table because he suspected the atomic weights for these elements were inaccurate. What was Mendeleev's reason for this suspicion?
Answer:
The reason for the suspicion was because the manner in which iodine reacted chemically as well as its other chemical properties, indicated that it belonged in the same group as chlorine and bromine, while the much heavier tellurium should be placed in the previous group
The suspicion was proved to be correct when the atomic number of tellurium was found to be 52 and that of iodine was found to be 53 by later scientists
Explanation:
8. Rewrite each of the following as an "ordinary” decimal
number.
a. 2.789 X 103
d. 4.289 X 101
b. 2.789 X 10-3
e. 9.999 X 104
c. 9.3 X 107
f. 9.999 X 10-5
Answer:
????????
Explanation:
In the nucleus with the protons together their sum is the
Answer:
the nucleus is called the mass number and, expressed in amu, is approximately equal to the mass of the atom
Explanation:
Answer:
AMU or Atomic Mass Unit
Is Air considered matter? Why or why not?
Answer:
Yes, air is matter because it is a gas composed mostly of nitrogen, oxygen, and argon, and gases do have mass because they’re molecules bouncing around a contained volume (here, the atmosphere). Water vapor, mixed in to some extent with air, is also a gas and therefore has mass.It takes up space and volume
Explanation:
Air is matter because:
It takes up space
It has mass
And it is composed of particles.
why atoms combine in their gaseous form only???
Answer:
Every atom wants to get a stable state so atom combines to fill the outermost shell and become stable by either losing electrons or gaining electrons. Atom form chemical bonds with over atoms when there is an electrostatic attraction between them.
Explanation:
(110.3 g) + (45.27 g) + (54.43 g)
Answer:
210 grams
Explanation:
just add them all up
Which two particles are always found in equal number in neutral atoms
Answer:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.
Answer:
protons and electrons
Explanation:
A P E X
why is helium heavier than hydrogen
Answer:
because it's has an additional electron. hydrogen is just made up of one proton
There is usually only one correct method that can be used to solve a problem true or false
What elements were formed in Nuclear fusion?
Answer:
tritium and deuterium are combined and result in the formation of helium
You have left the carton of milk out of the refrigerator overnight and it has spoiled. This is an example of a _________.
A. Physical change
B. Chemical property
C. Chemical change
D. Physical property
Answer:
the answer would be chemical change
What is the density of 10cm^3 volume of water that has a mass of 10g?
Answer:
The answer is
1.0 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 10 g
volume = 10 cm³
It's density is
[tex]density = \frac{10}{10} = 1 \\ [/tex]
We have the final answer as
1.0 g/cm³Hope this helps you
Answer:
1g/cm³
Explanation:
The formula is [ d = m/v ] where m = mass and v = volume.
d = 10/10
d = 1
Best of Luck!
3. You have 28.5 grams of Carbon. How many atoms is this?
1 gram of carbon = 12 atoms ..
As per u r question..
28.5 × 12 = 342..
If this answer helps you mark as brainlist..Changes in a state of matter include?
Answer: melting, freezing, sublimation, deposition, condensation, and vaporization
Help me please and ty!
Answer:
Its 2 and 3
Explanation:
what happens before, during, and after a chain reaction.
A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats. The process may be controlled (nuclear power) or uncontrolled (nuclear weapons).
pls mark as brainliest
TUESDAY:
What are the electrical charges of the three subatomic particles of an atom?
IL
Protons =
Electrons =
Neutrons =
help asap!!
Answer:
Protons=positive
Electrons=negative
Neutrons=Neutral
Explanation:
I am pretty sure this is what you are asking for if not just tell me
4. The sand should be removed next. What 4 pieces of equipment will you use for its removal?
The 4 pieces of equipment I will use for removal of the sand are...
5. What 2 pieces of equipment will you use to separate the salt from the water?
The 2 pieces of equipment I will use to separate the salt from the water are...
6. List out the steps involved in separating salt from the water?
The steps involved in separating salt from water are...
distillation
filtration
distillation
sedimentation
using magnet
Hope this helps
How is aluminum an example of extensive
property?
Answer:
If the property depends on the amount of matter present, it is an extensive property. The mass and volume of a substance are examples of extensive properties; for instance, a gallon of milk has a larger mass and volume than a cup of milk.
Explanation:
which example is a body fossil
(A) an ornithopod track
(B) shrimp burrow
(C) dinosaur footprint
(D) dinosaur bone
Answer:
dinosaur bone
Explanation:
fossils are remains from a certain organism or trace of any living thing from the past.
Answer:
D Dinosaur bone
Explanation: I took the quiz
Which gas is used by humans in process of cellular respiration
Answer:
Humans use Oxygen or O2 to begin the process of cellular respiration, and then when this process is finished it gives of carbon dioxide or Co2
Explanation:
Answer:
oxygen is used by human in the process of cellular respiration
Explanation:
because cells uses oxygen to break down sugar
What are the parts of an electron configuration: 1s22s22p63s2 ?
1,2,3 = shell?
s, p =
2,2,6,2 =
Explanation:
electronic confirmation=1s^2,2S^2,2P^6,3S^2
atomic no.is 12 therefore :- this is magnesium
Period=3
Block=s-block
Group=II A
A chemical reaction that has the general formula of AB + CB + Als best classified as a
reaction.
8
Replacement I think, hope this helps ;)
Explanation:
Answer:
Replacement
Explanation:
does changes in state of matter indicate a chemical change.
Answer:
No, changes in matter are physical changes.
Explanation:
