- 1 What are some substances that make up water?
- 2 What particles make up an atom gizmo?
- 3 How can you calculate the number of neutrons N in an atom gizmo?
- 4 What is the Lewis structure of water?
- 5 Why is water called water?
- 6 What is the heaviest stable isotope?
- 7 What are electrically charged particles called?
- 8 Which radioisotope is most stable?
- 9 What charge does a neutron have?
- 10 What is the formula to solve for the neutron?
- 11 How do we find atomic mass?
- 12 Is H2O linear or bent?
- 13 What is the Lewis structure of ammonia?
- 14 What is the Lewis structure of C2H4?
What are some substances that make up water?
Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states.
What particles make up an atom gizmo?
Atoms are tiny particles of matter that are made up of three particles: protons, neutrons, and electrons. The Element Builder Gizmo ™ shows an atom with a single proton. The proton is located in the center of the atom, called the nucleus.
How can you calculate the number of neutrons N in an atom gizmo?
To calculate the number of neutrons in the nucleus of an atom is simple. You take the atomic, or proton number of the element, and you subtract it from the element’s mass number.
What is the Lewis structure of water?
The Lewis structure of water shows that the oxygen atom has two lone pairs. Those lone pairs, together with the large difference in electronegativity between oxygen and hydrogen, give water one of its most important properties, its strong polarity.
Why is water called water?
The word water comes from Old English wæter, from Proto-Germanic *watar (source also of Old Saxon watar, Old Frisian wetir, Dutch water, Old High German wazzar, German Wasser, vatn, Gothic (wato), from Proto-Indo-European *wod-or, suffixed form of root *wed- (” water “; “wet”).
What is the heaviest stable isotope?
Examples of elements with doubly magic nuclei are 42He, with 2 protons and 2 neutrons, and 20882Pb, with 82 protons and 126 neutrons, which is the heaviest known stable isotope of any element.
What are electrically charged particles called?
Many fundamental, or subatomic, particles of matter have the property of electric charge. For example, electrons have negative charge and protons have positive charge, but neutrons have zero charge.
Which radioisotope is most stable?
A good example of this is tritium, a radioactive isotope of hydrogen naturally present at extremely low levels. This table contains the elements that have no stable isotopes. Radioactive Elements.
|Element||Most Stable Isotope||Half-life of Most Stable Isotope|
What charge does a neutron have?
Proton—positive; electron—negative; neutron —no charge. The charge on the proton and electron are exactly the same size but opposite.
What is the formula to solve for the neutron?
The mass number is the sum of protons and neutrons in the nucleus. The atomic number is the number of protons. Therefore, you can subtract the atomic number from the mass number to find the number of neutrons.
How do we find atomic mass?
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
Is H2O linear or bent?
The water molecule is bent molecular geometry because the lone electron pairs, although still exerting influence on the shape, are invisible when looking at molecular geometry.
What is the Lewis structure of ammonia?
The Lewis structure of ammonia, NH3, would be three hydrogen atoms bonded to a nitrogen atom in the middle, with a lone pair of electrons on top of the atom. This is the reason why ammonia acts as a Lewis base, as it can donate those electrons.
What is the Lewis structure of C2H4?
For C2H4. In C2H4, if we look into the lewis structure, we will see that there are three bonded pairs of electrons around each carbon and zero lone pair. According to the VSEPR chart, the shape of the ethene molecule is trigonal planar. There are two triangles overlapping each other as we can see in the diagram.