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WorksheetsAtoms and Periodic Table
Total questions: 20
Worksheet time: 10mins
Who developed the modern periodic table?
Bohr
Einstein
Newton
Mendeleev
Which subatomic particle is different in number in isotopes, such as Carbon-12 and Carbon-14?
protons
electrons
neutrons
atoms
Which best describes the use of properties to produce the correct model of the periodic table?
The arrangement of the elements is unrelated to physical properties
Elements are arranged into groups based on similar properties
Physical properties are only used to differentiate between metals and nonmetals
Elements are arranged from left to right according to the increase of metallic properties
Why are the noble gases, such as Helium (He) and Neon (Ne), grouped together in the periodic table?
They are nonreactive gases
They are highly reactive metallic solids
They are dangerous gases when combined with water
They are liquid at room temperature and have high boiling points
The properties of element X are: MALLEABLE, DUCTILE, SHINY, CONDUCTS HEAT AND ELECTRICITY. Which represents the identity of element X?
Carbon (C)
Sulfur (S)
Copper (Cu)
Iodine (I)
If an element has no electrons to share and is stable, what family is it found in?
Noble gases
Alkali Metals
Carbon
Halogens
Which subatomic particle determines the reactivity of groups of elements in the periodic table?
atoms
electrons
protons
neutrons
When determining the number of neutrons in an atom, what do you do?
Add the protons and electrons
Add the atomic number and atomic mass
Subtract the atomic mass from the atomic number
Subtract the atomic number from the atomic mass
What describes the reactivity of Group 1, the Alkali Metals?
Reactivity increases down a group
Reactivity decreases down a group
Reactivity increases left to right across a period
Reactivity decreases left to right across a period
What does the atomic number represent?
atomic mass
number of atoms
number of protons
number of neutrons
Which of these elements is most reactive?
Sodium (Na)
Carbon (C)
Magnesium (Mg)
Neon (Ne)
A student finds that an unknown element readily reacts with alkali metals. Which is the best conclusion about the unknown element?
it is an alkaline earth metal
it is a noble gas
it is in group 16
it is in group 17
Sodium reacts with water. Which element will react in a similar way to sodium if it is exposed to water?
Magnesium (Mg)
Lithium (Li)
Oxygen (O)
Carbon (C)
Which describes a row of elements in the periodic table?
period
group
family
column
The metals and nonmetals are divided by a "stair step." What are the elements called that are attached to the stair step?
gases
metals
nonmetals
metalloids
Which explains how elements are arranged on the modern periodic table?
Elements are arranged from fewest neutrons to most neutrons
Elements are arranged from most neutrons to fewest neutrons
Elements are arranged from fewest protons to most protons
Elements are arranged from most protons to fewest protons
Which explains why the alkali metals are the most reactive group in the periodic table?
They are radioactive
They have only one electron in their outer energy level
They have complete outer energy levels
They have the highest atomic masses of any elements
Protons and neutrons are found in the ____________ of the atom.
empty space
electron cloud
cell
nucleus
In a neutral atom, the number of protons equal the number of _____________________ .
atoms
electrons
atomic mass
neutrons
Which element has 7 valence electrons?
Fluorine (F)
Hydrogen (H)
Lead (Pb)
Oxygen (O)
