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WorksheetsCh. 4 Atoms Test (Open Note)
Total questions: 30
Worksheet time: 26mins
The positively charged particle in an atom.
Proton
Neutron
Electron
Nucleus
The total number of protons and neutrons in the nucleus of an atom
Atomic Number
Mass Number
Atomic Theory
Electron Cloud
Atoms are made up of ________________
energy
electrons
subatomic particles
gasses
The following subatomic particles are in the nucleus.
Protons and nucleus.
Protons and neutrons.
Protons and electrons
Neutrons and electrons
The mass number of an atom is the mass of ______ + _____
protons + neutrons
protons + electrons
neutrons + nucleus
protons + nucleus
Using the picture from a periodic table, what is the Atomic Number?
26
Fe
55.845
56
Using the picture from a periodic table, how many PROTONS are in Iron?
26
30
55.845
56
Using the picture from a periodic table, how many NEUTRONS are in Iron?
26
30
55.845
56
When two atoms of the same element have different masses, they are called ______, and have a different number of ______.
Neutrons; Isotopes
Atoms; Isotopes
Isotopes; Protons
Isotopes; Neutrons
......... is the subatomic particles inside the nucleus that has positive charge
Neutrons
Protons
Electrons
Which of the following determines the identity of an element?
the number of protons
the number of neutrons
the arrangement of electrons
the number of energy levels
How many kinds of subatomic particles are there in an atom?
1
2
3
What are ions?
Neutral atom
colorful atoms
Charged Atoms
None of them
Particles are tightly packed. Particles move SLOW! Has definite shape. Has constant volume.
Solid
Liquid
Gas
Matter
Particles are free to move in all ways. Particles are moving FAST! Has indefinite shape. Volume is NOT constant.
Solid
Liquid
Gas
Matter
The cloud model is what we use for the atomic theory now. What does the cloud model look like?
A ring with gold foil in the middle.
Electrons orbiting the nucleus like the planets around the sun.
A cloud of electrons floating around the nucleus.
A scoop of chocolate chip ice cream. It had electrons scattered within a ball of positive charge.
What does atom mean?
small
visible
indivisible
particle
What is a particle with no charge?
neutron
electron
proton
atom
Used the word "atomos" to decsribe the uncuttable (indivisible) atom.
Democritus
Thomson
Bohr
Dalton
What is one way Neutrons are different from electrons?
they both are negative
neutrons have no charge, while electrons have a negative charge
Both are in the nucleus( center of atom)
Electrons are inside nucleus and neutrons are outside the nucleus.
The image shows a model of a lithium atom.
How many neutrons are in this lithium atom?
3
4
7
10
Which of the following represents a pair of isotopes?
Ca+2,Be+2
12C, 14C
Fe+2, Fe+3
7N, 8O
