You might calculate volume using the sphere’s radius, circumference or diameter. You can also submerge the sphere in water to find its volume by displacement. Once you know the volume, you can multiply by the density to find the mass.

The definition of density of a body is mass of the body per unit volume of the body. From this we get Density = Mass/Volume. In the above problem, We have 2 things: Mass of the sphere is 100 g and Radius of the sphere is 3 centimeter.

Explanation: Density equals mass divided by volume (D=M/V). Thus, 35/7=5.

Mass Number Experimental data showed that the vast majority of the mass of an atom is concentrated in its nucleus, which is composed of protons and neutrons. The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom.

In order to determine the mass of one atom of an element, you must determine its molar mass, which is its atomic weight on the periodic table in g/mol, and you need to know the relationship between moles and the number of atoms: 1 mol of atoms = 6.022×1023 atoms . Then divide the molar mass by 6.022×1023 atoms/mol .

To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number.

Atomic mass is never an integer number for several reasons: The atomic mass reported on a periodic table is the weighted average of all the naturally occuring isotopes. Being an average it would be most unlikely to be a whole number. The mass of an individual atom in atomic mass units is the mass relative to carbon-12.

To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons. The atomic mass of the atom is the mass of the protons plus the mass of the neutrons, 6 + 7, or 13.

Hint: There are some microscopic particles that can’t be seen from our vision because they are very tiny or smaller in size. Atoms can’t be seen from our naked eyes because of the same reason and also, they do not exist independently.

Atomicity is defined as the total number of atoms present in a molecule. For example, each molecule of oxygen (O2) is composed of two oxygen atoms. So atomicity of oxygen is 2.In older contexts, the term atomicity is sometimes used in the same sense as valency.

It not possible to see an atom even with the most powerful microscope , because they are very small.

Atoms exist in free states in the form of molecule. Molecules may be formed by the combination of atoms of two or more different elements. For example molecule of water. It is formed by the combination of two atoms of hydrogen and one atom of oxygen.

Atoms are small. In fact, even the most powerful light-focusing microscopes can’t visualise single atoms. What makes an object visible is the way it deflects visible light waves. Atoms are so much smaller than the wavelength of visible light that the two don’t really interact.

Stars that go supernova are responsible for creating many of the elements of the periodic table, including those that make up the human body. ‘It is totally 100% true: nearly all the elements in the human body were made in a star and many have come through several supernovas. …

No atoms themselves do not die, because they are not alive, they do make up the elements used to make live things but them are not alive.

A lot of this has to do with the idea that matter and energy are essentially the same and that when you ‘destroy’ an atom you simply release the energy which binds the particles which form the atom together and in doing so you will see the atom turn into a bunch of particles and a burst of energy, all of which could …

Everything you can see, touch, smell, feel, and taste is made of atoms. Atoms are the basic building-block of all matter (including you and me, and everyone else you’ll ever meet), so if we want to know about what Earth is made of, then we have to know a few things about these incredibly small objects.

There are several ways that atoms can combine. In one way, atoms are put together to form things called molecules. To understand molecules, you have to understand what an atom is made up of. When they’re sharing electrons, they’re totally stuck together and become what’s called a molecule.

The chemical bond in which two atoms share a pair of electron and form molecules is called covalent bond. The atoms of covalent compounds are not free like those in ionic compounds. They are tightly linked to one another by the covalent bond. Hence each independent particle is a combination of the atoms.

Atoms form chemical bonds to make their outer electron shells more stable. The type of chemical bond maximizes the stability of the atoms that form it. Covalent bonds form when sharing atoms results in the highest stability.

In reality, atoms do not contain any empty space. Rather, they are filled completely with spread-out electrons, making the shrinking of atoms impossible.

Mass density is defined as the mass per unit volume. gm/cm3 is, therefore, a unit of mass density. The mass density ρ of an object may be found by dividing its mass M by its volume V. Sphere: V = (4/3) π R3 where R is the radius of the sphere.

Answer. = 166.59 cm³ (approx.)

Perimeter is the distance around the outside of a shape. Area measures the space inside a shape.

Use visual cues to differentiate perimeter from area. This is why I try to help students identify ways to differentiate the two. Providing a visual reminder can really make a huge difference in helping students recall the two terms and what they mean.

What a great way to introduce the concept of area and perimeter to kids! Start out creating squares and rectangles and find the area/perimeter. Then, have kids construct irregular polygons (and find a/p). Once they understand it, give them an area and perimeter and see if they can construct the MYSTERY shape!

Answer: 144 u^2. Step-by-step explanation: Area of a triangle is b*h*1/2.

In geometry, the area can be defined as the space occupied by a flat shape or the surface of an object. The area of a figure is the number of unit squares that cover the surface of a closed figure.

Draw a line segment 4 cm.

1. ii. Take a point P outside the circle and draw a secant PAB, intersecting the circle at A and B.
2. iii. Produce AP to C such that AP = CP.
3. iv. Draw a semi-circle with CB as diameter.
4. v. Draw PD perpendicular to CB, intersecting the semi-circle at D.
5. vi.
6. vii.
7. viii.