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WorksheetsUnit 4: Elements and Atoms Review
Total questions: 24
Worksheet time: 16mins
Anything that has mass and takes up space is called ____________.
Atom
Element
Molecule
Matter
The ability of a substance to be able to change into another: ______________________________
Physical property
Chemical property
Molecule
Substance
How many protons does Potassium (K) have?
11
15
19
20
How many electrons does Boron (B) have?
5
6
10
11
What is Fluorine's (F) atomic mass?
9
19
10
11
Which subatomic particle is smaller than the others?
Proton
Neutron
Electron
All are the same size
Which of the following is correct?
Neutrons are in the shells
Electrons are in the nucleus
Protons are in the nucleus
How many electrons do you see in this image?
4
2
3
6
The elements in the Periodic Table are arranged by increasing order of
atomic weight
atomic number
atomic mass
letters
The basic building block for matter is the
cell
atom
nucleus
molecule
These particles are positively charged.
neutron
proteino
proton
electron
Electrons are negatively charged particles found ______.
outside the nucleus
in the nucleus.
both in and outside the nucleus
on the surface of the nucleus
An atom with 8 protons and 10 neutrons has an atomic number of _____.
8
18
10
2
In order for an atom to become a different element its ______ must change.
mass number
number of neutrons
average mass (weight)
Number of protons
The number of protons plus neutrons is referred to as the _________.
atomic mass (or mass number)
atomic number
isotope number
ionic charge
Which of these determines the identity of an atom?
proton
neutron
valence electron
protons and neutrons
Which of these has a neutral charge?
proton
neutron
electron
protons and neutrons
How do you determine how many Neutrons an atom has?
Protons + Valence Electrons
Atomic Mass - Atomic Number
Atomic Mass + Atomic Number
Protons + Electrons
What do we call a substance that consists of only one type of atom?
Atom
Element
Compound
Substance
The central region of an atom where its neutrons and protons are is its
nucleus
electron cloud
core
center
Vertical columns in the periodic table are _________ of elements with similar properties.
groups
periods
_______ are horizontal rows of elements that contain increasing numbers of protons and electrons.
Groups
Periods
