IGCSE CHEM_CHAP 2.2_Atomic structure and the Periodic Table

~1/2000

What is the relative mass of an electron?

1

How many electrons are in the outer shell of any Group 1 element?

1

What is the relative mass of a neutron?

1

What is the relative mass of a proton?

11

If a Sodium atom has an atomic number of 11, how many protons does it have?

12

If a carbon atom has 6 protons and 6 neutrons, what is its mass number?

2

How many electrons are in the outer shell of Helium?

2

What is the maximum number of electrons the first shell can hold?

2, 1

What is the electron configuration of Lithium (atomic number 3)?

2, 8, 2

What is the electron configuration of Magnesium (atomic number 12)?

2, 8, 5

What is the electron configuration of Phosphorus (atomic number 15)?

2, 8, 8

What is the electron configuration of Argon (atomic number 18)?

3

How many occupied electron shells does an element in Period 3 have?

50 Short-Answer Questions

6

If a Carbon-12 atom has a mass number of 12 and 6 protons, how many neutrons does it have?

6

If carbon has 6 protons, what is its atomic number?

7

How many electrons are in the outer shell of any Group 7 element?

7

If an atom has 3 protons and 4 neutrons, what is its nucleon number?

8

How many electrons are in the outer shell of Neon or Argon?

8

What is the maximum number of electrons the second and third shells can hold?

Alkali metals

What is the special name for Group 1 elements?

Atom

The smallest part of an element that can exist; Nguyên tử.

Atom

The smallest part of an element that can exist; Nguyên tử.

Atom

What is the smallest part of an element that can exist?

Atomic (proton) number

The number of protons in the nucleus of an atom; Số hiệu nguyên tử.

Atomic number

The number of protons in the nucleus of an atom; Số hiệu nguyên tử.

Electron

A negatively charged subatomic particle that surrounds the nucleus in shells with a relative mass of approx. 1/2000; Electron.

Electron

A subatomic particle with a negative charge (-1) and a relative mass of approx. 1/2000; Electron.

Electrons

Which subatomic particles are arranged in shells surrounding the nucleus?

Group

A vertical column of elements in the Periodic Table; Nhóm.

Group

A vertical column of elements in the Periodic Table; Nhóm.

Group

What is a vertical column in the Periodic Table called?

Group 1

Which group do Lithium (Li) and Sodium (Na) belong to?

In the nucleus

Where is almost all the mass of an atom concentrated?

Isotopes

Atoms of the same element which have the same number of protons but different numbers of neutrons; Đồng vị.

Isotopes

Atoms of the same element which have the same number of protons but different numbers of neutrons; Đồng vị.

Isotopes

What are atoms of the same element with different numbers of neutrons called?

It is negligible (very small)

Why is the mass of an electron often ignored in mass calculations?

Mass (nucleon) number

The total number of protons and neutrons in the nucleus of an atom; Số khối.

Mass number

The total number of protons and neutrons in the nucleus of an atom; Số khối.

Mass number

What is another name for the nucleon number?

Negative (-1)

What is the relative charge of an electron?

Neutral (0)

What is the relative charge of a neutron?

Neutral

What is the charge of a neutron (to help remember its name)?

Neutron

A subatomic particle with no charge (0) and a relative mass of 1; Nơ-trôn.

Neutron

A subatomic particle with no charge (neutral) found in the nucleus with a relative mass of 1; Nơ-trôn.

Noble gases

Group VIII (8) elements that have a full outer shell of electrons; Khí hiếm.

Noble gases

Group VIII elements that have a full outer shell of electrons and are unreactive; Khí hiếm.

Noble gases

What is the common name for Group VIII elements?

Nucleus

The central part of an atom containing protons and neutrons; Hạt nhân.

Nucleus

The central part of an atom containing protons and neutrons; Hạt nhân.

Outer shell electrons

Which electrons are involved in chemical reactions?

Period

A horizontal row of elements in the Periodic Table; Chu kỳ.

Period

A horizontal row of elements in the Periodic Table; Chu kỳ.

Period

What is a horizontal row in the Periodic Table called?

Period 2

Which period do elements with atomic numbers 3 to 10 belong to?

Positive (+1)

What is the relative charge of a proton?

Proton

A positively charged subatomic particle found in the nucleus with a relative mass of 1; Proton.

Proton

A subatomic particle with a positive charge (+1) and a relative mass of 1; Proton.

Proton number

What is another name for the atomic number?

Protons

All atoms of the same element must contain the same number of which particle?

Protons and neutrons

Which subatomic particles are located in the nucleus?

Radioactive and non-radioactive

What are the two types of isotopes mentioned in the notes?

Same number of protons

Why do isotopes of the same element have the same chemical properties?

Shells (energy levels)

The areas surrounding the nucleus where electrons are arranged; Lớp vỏ electron.

Shells

Energy levels surrounding the nucleus where electrons are arranged; Lớp vỏ electron.

Subtract atomic number from mass number

How do you calculate the number of neutrons?

The group number

For Groups I to VII, what is equal to the number of outer shell electrons?

The number of protons

In a neutral atom, the number of electrons is always equal to what?

The number of protons

What does the atomic number of an element represent?

The one closest to the nucleus

Which electron shell is filled first?

The period number

What is equal to the number of occupied electron shells in an atom?

Theo định dạng: answer

question

They are stable

Why do noble gases not tend to form chemical bonds?

They have a full outer shell

Why are noble gases unreactive?

Total number of protons and neutrons

What does the mass number represent?