Ionization energy is...

the energy required to remove an electron

the energy required to remove a neutron

the energy required to add an electron

the energy required to add a neutron

Metals (select all that apply)

are good conductors of heat and electricity.

are found on the left side of the periodic table.

are found on the right side of the periodic table.

Rubidium has a lower ionization energy than sodium. One reason for this is that the...

valence electrons are farther from the nucleus

number of protons is increasing

number of energy levels is decreasing

number of neutrons is increasing

Which of the following conclusions is not supported by the data in the above table?

atomic radii increase from left to right

atomic radii can be measured for these elements

atomic radii decrease from left to right

atomic radii increase from top to bottom

The images here are models of atoms for two different elements. Which of the following statements accurately describe the elements represented by these models? Select TWO correct answers.

Element 1 is Carbon (C) and Element 2 is Fluorine (F).

Element 1 and Element 2 are in the same period on the periodic table.

Element 1 and Element 2 are in the same group on the periodic table.

Element 1 is Beryllium (Be) and Element 2 is Neon (Ne).

Element 1 and Element 2 have similar chemical reactivity.

Which of the following is the best explanation for the trend observed in the graph?

F has the largest electronegativity because the electrons in element F have the largest attraction to the nucleus

At has the smallest electronegativity because it has the smallest number of electrons

F has the largest electronegativity because it contains the smallest number of protons and it has the smallest radius

At has the smallest electronegativity because it has the largest radius and the largest number of protons

Which of the following statements is true?

Electron placement determines an atom’s reactivity.

Electrons contribute most of the mass of an atom.

Proton location determines properties such as luster.

Neutrons determine whether an atom is liquid at room temperature.

Dmitri Mendeleev studied the chemical characteristics of elements in the 1800s. He discovered that elements could be arranged in a table according to patterns that occur in their characteristics. Which of these processes would be very difficult now without Mendeleev's discoveries?

predicting the reactivity of elements

measuring the atomic mass of elements

identifying the color of elements

using the chemical symbols of elements

The diameter of neutral atoms generally decreases going left to right across one period on the periodic table. What change causes this decrease in diameter of atoms?

The attractive force between the protons and electrons increases.

The number of outermost electrons decreases.

The number of outermost electrons increases.

The attractive force between the protons and neutrons increases.

Electronegativity is a measure of how easy it is for an atom to attract another electron. The elements He, Ne, and Ar have the lowest electronegativity values. What do these elements have in common?

They have an outer orbital full of electrons.

They have one electron in their outer orbital.

They lose a proton which makes them negatively charged.

They have an extra electron which makes them positively charged.

Going from left to right in the periodic table, the atomic radius decreases. Which of the following explains the atomic radii trend of elements across a period?

The attraction increases between the nucleus and the outer electrons.

There is an increase in the number of electron shells.

There is a decrease in the number of electron shells.

The attraction decreases between the nucleus and the outer electrons.

The Periodic Table

Authored by Mary Toothaker

Science

10th Grade

NGSS covered

Used 15+ times

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230 questions

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MATCH QUESTION

1 min • 1 pt

Match the following

transition metal

Xenon

non-metal

Copper

halogen

Calcium

alkali earth metal

Bromine

noble gas

Oxygen

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Metals will always form

cations

anions

Answer explanation

Metals tend to lose electrons due to their low electronegativity, resulting in the formation of positively charged ions known as cations. Therefore, metals will always form cations.

CATEGORIZE QUESTION

3 mins • 1 pt

Organize these options into the right categories

Groups:

(a) Alkali Metals

(b) Halogens

(d) Noble Gases

sodium

cobalt

neon

argon

potassium

silver

francium

tantalum

bromine

lithium

iodine

fluorine

helium

platinum

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calcium is a(n)...

alkali metal

transition metal

alkali earth metal

halogen

Answer explanation

Calcium is classified as an alkali earth metal, which is found in Group 2 of the periodic table. This group includes elements that are known for their reactivity and the presence of two electrons in their outer shell.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phosphorus is a(n)...

alkali metal

nonmetal

halogen

transition metal

Answer explanation

Phosphorus is classified as a nonmetal because it typically lacks the properties of metals, such as high electrical conductivity and malleability. It is found in group 15 of the periodic table, which is known for its nonmetals.

REORDER QUESTION

1 min • 1 pt

Reorder the following so that they are in order of increasing reactivity (1 is the least reactive)

francium

cesium

rubidium

potassium

sodium

REORDER QUESTION

1 min • 1 pt

Reorder the following so they are in order of increasing reactivity (1 would be the least reactive)

iodine

fluorine

astatine

chlorine

bromine

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The Periodic Table

Match the following

Metals will always form

Metals tend to lose electrons due to their low electronegativity, resulting in the formation of positively charged ions known as cations. Therefore, metals will always form cations.

Organize these options into the right categories

Calcium is a(n)...

Calcium is classified as an alkali earth metal, which is found in Group 2 of the periodic table. This group includes elements that are known for their reactivity and the presence of two electrons in their outer shell.

Phosphorus is a(n)...

Phosphorus is classified as a nonmetal because it typically lacks the properties of metals, such as high electrical conductivity and malleability. It is found in group 15 of the periodic table, which is known for its nonmetals.

Reorder the following so that they are in order of increasing reactivity (1 is the least reactive)

Reorder the following so they are in order of increasing reactivity (1 would be the least reactive)

Match the following

Organize these options into the right categories... These elements will form a...

Manganese is a(n)...

Manganese is classified as a transition metal, which are elements found in the d-block of the periodic table. They are known for their ability to form various oxidation states and complex ions.

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