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WorksheetsChemistry of life
Total questions: 30
Worksheet time: 15mins
What is an atom
the smallest unit of life
the smallest unit of matter
makes up stuff
a type of molecule
What is the positive charge in the nucleus
proton
neutron
protein
electron
what is the neutral part of an atom
proton
nucleus
neutron
electron
what is the negative part of an atom
proton
electrode
electron
nucleus
What are the three sub-atomic particles of an atom
protons, nucleus, electrodes
proteins, neutrons, electrons
Protons, neutrons, electrodes
protons, neutrons, electrons
Are electrons found in the nucleus?
True
False
Who discovered the atom
Demetri
Democritus
Devinci
Dalton
What is an element
the purest form of substance that is made of only one type of atom
when one or more atoms bond together
when electrons are shared between atoms
when an electron is transferred from one atom to another
What is an compound
the purest form of substance that is made of only one type of atom
when one or more atoms bond together in definite measures
when electrons are shared between atoms
when an electron is transferred from one atom to another
What is an ionic bond
the purest form of substance that is made of only one type of atom
when one or more atoms bond together in definite measures
when electrons are shared between atoms
when an electron is transferred from one atom to another
What is an covalent bond
the purest form of substance that is made of only one type of atom
when one or more atoms bond together in definite measures
when electrons are shared between atoms
when an electron is transferred from one atom to another
What is the charge of a proton?
negative
positive
no charge
neutral
What is the charge of a electron?
negative
positive
no charge
neutral
What is the charge of a neutron?
negative
positive
no charge
neutral
The atomic number of an atom is equal to what
protons
neutrons
protons and neutrons
electrons
The mass number or atomic mass of an atom is equal to what
protons
neutrons
protons and neutrons
electrons
Protons are smaller than electrons
true
false
Where are electrons found
the nucleus
the atmosphere
circling the nucleus
no where, what is an electron
Where are neutrons found
the nucleus
the atmosphere
circling the nucleus
no where, what is an neutron
Where are protons found
the nucleus
the atmosphere
circling the nucleus
no where, what is a proton
if the atomic number of carbon is 6, how many protons does it have?
5
6
7
8
The number of protons an element has can change and it still be the same element
True
False
What are valence electrons?
inner most electrons
outer most electrons
any electron
who knows
What are Van Der Waals Forces?
a strong interaction between molecules when they are briefly close together
a weak interaction between molecules when they are briefly close together
any interaction between molecules when they are briefly close together
no interaction between molecules when they are briefly close together
Why is water considered covalent?
because the oxygen takes the electrons from the two hydrogen atoms
because water is cool and polar
because the oxygen atom shares the electrons with the two hydrogen atoms
because water is the universal solvent
What does "atomos" mean
unable to bend
unable to break
unable to be cut
unable to be big
A chemical compounds has the same physical and chemical properties as the different elements that make it up
true
false
Hydrogen bonds are bonds that hydrogen forms with other atoms such as oxygen and nitrogen
True
False
Hydrogen bonds are stronger than ionic and covalent bonds
true
false
How many neutrons does Oxygen 18 have?
7
8
9
10
