1.) The modern atomic theory has been updated over the years as new observations of the atom have been made. What do these chang
es say about the strength of the modern atomic theory? A. The changes make the theory weaker because they demonstrate that the scientific community can't agree on the properties of atoms.
B. The changes make the theory weaker because they demonstrate that the original atomic theory was flawed, so all resulting theories are also flawed.
C. The changes make the theory stronger because it has been tested and edited multiple times, making it more durable.
D. The changes make the theory stronger because each time the theory is changed, it becomes more popular.
2.) In Rutherford's famous experiment, he shot heavy, fast moving, positive alpha particles at a thin gold foil. Based on Thomson's plum pudding model of the atom, what did Rutherford expect to happen, and why?
A. All the alpha particles would be deflected by the foil because of the even distribution of mass and charge throughout the atom.
B. All the alpha particles would pass straight through the foil because of the even distribution of mass and charge throughout the atom.
C. Most of the alpha particles would become embedded in the foil because they are attracted to the negative electrons in the atom.
D. Some of the alpha particles would be deflected and some would pass through, because of the negative charge of the electron cloud.
There are various variants of Coviid virus. The Brazilian variant P also known as Gamma variant is the third variant of the original SARS-CoV2. This variant has raised concerns since it has ability to spread more quickly then previous variants and this is more negative variant. It is assumed that Coviid variant Gamma and Delta has ability to absorb move UV light but this is not proved yet and research is underway.
Sodium Diacetate is a compound with the formula of NaH2. it is a salt of acetic acid. it is a colorless liquid that is used in seasonings and as an antimicrobial agent.
An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.
