Quiz - The Atomic Theory | The Atomic Theory
General Chemistry 1 - Quiz - The Atomic Theory
What is the chemical symbol of magnesium?
The symbol of Magnesium in the periodic table is Mg.
The sublimation is the transition of a substance...
Which of the following statements about chemical reaction is incorrect?
In a chemical reaction, atoms are rearranged, separated, or recombined to form new compounds but are not created or destroyed.
Which of the following statements is correct?
Most of the mass of an atom is concentrated in its tiny nucleus.
How many protons, electrons and neutrons does 40Ca2+ have (knowing that calcium is the twentieth element in the periodic table)?
Calcium is the 20th element in the periodic table ⇒ 20 protons
mass number = protons + neutrons = 40 ⇒ 20 neutrons
charge = protons – electrons = +2 ⇒ 18 electrons
What is the nuclear symbol for an atom with the following subatomic particles: 8 protons, 8 neutrons, 10 electrons?
Z = atomic number = number of protons ⇒ Z = 8
A = mass number = protons + neutrons ⇒ A = 16
Q = charge = protons – electrons ⇒ Q = - 2
How do you name the acid HBr?
Binary Acid Naming: hydro- + first syllable of the anion + suffix -ic + acid