WorksheetsBio 9 Mid-year review: Chemistry
Total questions: 18
Worksheet time: 6mins
What is an Atom
Basic unit of matter
strongest unit of matter
visible in a microscope
a chemical compound
Positive particle in the atom
neutron
electron
proton
What is the negatively charged particle
proton
electron
uranium
neutron
What is the neutrally charged particle?
switzerland
nucleus
nucleolus
neutron
Where are the protons and neutrons found
nuclear
www.twitch.tv/itsvxlocity
nucleus
nucleolus
protons and neutrons have the ------ mass
biggest
smallest
similar
same
--------- surround the nucleus
electrons
air
particles
dust
electrons are
bigger
smaller
more charged
yellow
What is an element
steel
brick
a substance that consists of 2 or more molecules
a pure substance that consists of one type of atom
Over --- confirmed elements
100
150
70
225
Which elements make up 96% of the human body
nitrogen
carbon
calcium
Hydrogen
oxygen
Atomic number:
the amount of molecules in an atom
the number of protons in atom
the number of neutrons in an atom
the number of electrons in an atom
The atomic number determines:
the weight of the element
the circumference of the atom
the type of element
strength of the atom
What does the mass number tell us
total weight of the electrons
total weight of the neutrons and protons
the total number of electrons
the total number of protons and electrons
How many electrons?-carbon atom
4
5
3
6
How many protons-carbon atom
6
3
5
4
What would the mass number of the previous element be?
6
10
8
12
Isotopes are atoms that differ in the number of _______
electrons
neutrons
electrons
mass
