Have an account?
Skip to Content
Introducing new Paper mode
No student devices needed. Know more
14 questions
Show Answers
See Preview
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following statements about subatomic particles is true?
Protons, electrons and neutrons all have charges.
The atomic number represents the total number of protons and neutrons in an atom.
Protons and neutrons are virtually identical except that they have opposite charges.
Electrons are the smallest and lightest subatomic particle that we have studied.
- Multiple ChoicePlease save your changes before editing any questions.What does the nucleus of an atom contain?Electrons and neutronsProtons and neutronsNeutrinos and positronsDNA and RN
- Multiple ChoicePlease save your changes before editing any questions.In terms of matter, the atom is almost entirely filled with _____orbiting electronscharged protonsheavy neutronsempty space
- Multiple ChoicePlease save your changes before editing any questions.Most of the mass in an atom is made up of _____________________?protons and electronsprotons and neutronsneutrons and electronselectrons and quarks
- Multiple ChoicePlease save your changes before editing any questions.
The Model of the ATOM has:
Changed many times
Never changed
Changed once
Changed twice
- Multiple ChoicePlease save your changes before editing any questions.
Consider the following Rutherford-Bohr diagram:
It represents a neutral atom.
It represents a positive ion.
It represents an a negative ion.
It represents a neutral isotope.
- Multiple ChoicePlease save your changes before editing any questions.
The chemical symbol for this element is:
Cl
K
Ar
Ca
- Multiple ChoicePlease save your changes before editing any questions.
The atomic number for beryllium is:
4
5
9
9.01218
- Multiple ChoicePlease save your changes before editing any questions.
The mass number of argon is probably:
18
22
39.948
40
- Multiple ChoicePlease save your changes before editing any questions.
The atomic mass of carbon is:
20
12
12.01
40.08
- Multiple ChoicePlease save your changes before editing any questions.
The Periodic Table is organized by increasing...
atomic number
mass number
reactivity
atomic mass
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following statements about groups is false?
Group 1 elements react vigorously with water to form basic solutions.
Group 16 elements have a tendency to form ions with 2- charges.
Elements in the same group have identical physical properties at room temperature.
Group 18 elements are very unreactive.
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following statements about the Periodic Table is true?
Elements in the same group have similar chemical properties.
Iron is a main group element.
Elements in the same period have similar chemical properties.
The “magic” staircase divides transition elements from inner-transition elements.
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following compounds does not contain a metallic element?
sodium bicarbonate
carbon dioxide
calcium chloride
manganese dioxide