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WorksheetsBasic Chemistry
Total questions: 20
Worksheet time: 20mins
Which subatomic part of an atom gives it a positive charge?
Neutron
Proton
Electron
Nucleus
Which region of an atom has a negative charge?
The nucleus
Both nucleus and electron cloud
The neutrons
The electron cloud
An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?
0
7
6
13
What type of bond is formed when atoms share electrons?
Covalent
Ionic
Hydrogen
Polyatomic
What is Atomic Mass Number ?
Number of Protons
Number of Neutrons
Number of Protons and Neutrons
Number of Protons and Electrons
What is the Atomic Number of this Element
7
3
4
1
What is the Atomic Mass for Beryllium (Be)?
4
9.012
9
5
What is the atomic mass of this atom?
1
3
4
7
What are the vertical columns on the periodic called?
groups
periods
nonmetals
metals
metalloids
What are the horizontal rows on the periodic table called?
periods
groups
metals
nonmetals
metalloids
What is the molar mass of Cs2SO4 ?
361.9
361.8
313.9
180
What is an example of a physical change?
baking brownies
explosion
cutting paper
rust on metal
Is baking a cake a physical or chemical change?
Physical
Chemical
Burning wood
physical change
chemical change
How many atoms are in 12 grams of carbon-12?
6.022 x 1023 atoms
3.022 x 1026 atoms
2.602 x 1032 atoms
6.202 x 1020 atoms
The number 6.022 x 1023 is known as ___
Avocado's constant
Avogadro's number
Dalton's digit
the Lavoisier numeral
neon atomic number
(a)
