Question

1. which of the following are postulates in daltons atomic theory? select two correct answers.

• atoms of the same element are identical in mass and properties.
• atoms can be created or destroyed.
• compounds are formed by a combination of two or more different kinds of atoms.
• atoms of the same element are not identical in mass and properties.
• all matter consists of divisible particles called atoms.

Explanation:

Dalton's atomic theory postulates: 1. All matter is made of indivisible atoms. 2. Atoms of the same element have same mass/properties. 3. Compounds form from different atoms combining. 4. Atoms can't be created/destroyed. So "Atoms of the same element are identical in mass and properties" and "Compounds are formed by a combination of two or more different kinds of atoms" are correct. "Atoms can be created or destroyed" is wrong (atoms are indestructible in Dalton's theory), "Atoms of the same element are not identical..." is wrong, and "All matter consists of divisible particles..." is wrong (atoms are indivisible in Dalton's theory).

Answer:

A. Atoms of the same element are identical in mass and properties.
C. Compounds are formed by a combination of two or more different kinds of atoms.