9. Sınıf Kimya - Atom ve Periyodik Tablo - 1

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

Dalton said that atoms could be broken into smaller pieces.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

J.J. Thomson came up with the “plum pudding” model of the atom.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

J.J. Thomson came up with a nuclear model of the atom.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

The Rutherford model of the atom had electrons moving around the nucleus in fixed shells.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

The nucleus contains protons and neutrons.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

Most of the atom is empty space.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

There are positive and negative charges in Dalton’s Atomic Model.

(a)  

Read the following statement, if the statement is correct write T, if the statement is incorrect write F to the boxes supplied.

Electrons are found in the nucleus.

(a)  

Which of the following is wrong about ¹²C and ¹³C atoms?

• They are isotope atoms.

• Their neutron numbers are different.

• Their electron numbers are different.

• Their nuclear charges are same.

• Their chemical properties are same.

If the ³⁹X¹⁺ and ₁₅Y^3- ions are isoelectronic, what is the neutron number of X?

• 39

• 22

• 19

• 20

• 18