WorksheetsChemistry Quizziz
Total questions: 15
Worksheet time: 8mins
If chlorine has an atomic number of 17 and an atomic mass number of 35, how many protons does the element have?
35
18
17
52
What is an atom mostly composed of?
protons
neutrons
electron cloud
empty space
What makes up the the most mass in an atom?
Nucleus
Protons
Electrons
Electron Cloud
What are rows on the periodic table called?
Periods
Groups
Energy Levels
Families
What group would the noble gases react/bond with?
Halogens
Alkali Metals
None because they are already unreactive
None because they are already reactive
What subatomic particle has a positive electric charge?
Proton
Neutron
Electron
How many atoms in total are in water if the chemical formula is H2O ?
3
5
1
4
How many protons does Beryllium if it has an atomic number of 4?
3
6
4
5
What are the three types of a subatomic particles?
Electrons, Neutrons, Valence Electrons
Protons, Nucleus, Electrons
Protons, Neutrons, and Electrons
What is a subsript in a chemical formula?
The element in the formula
The number of atoms of each element
How many molecules are present
How many valence electrons do Halogens have?
6
3
7
5
Which of the following describes an electron cloud?
Made up of energy levels
Inside the nucleus
Most of an atom's mass
Used to identify atoms
What is a valence electron?
Protons in the outermost shell
Electrons in the nucleus
Neutrons in the electron cloud
Electrons in the outermost shell
How many molecules does 3CO2 have?
4
2
3
6
What group includes Neon?
Alkali Metals
Alkaline Earth Metals
Nobel Gases
Halogens
