Ancient philosophers regularly performed controlled experiments. Write true or false.

• True

• False

Answer explanation

The statement is false because ancient philosophers, such as Aristotle, did not conduct controlled experiments in the modern scientific sense. Their methods were more observational and speculative rather than experimental.

Philosophers formulated explanations about the nature of matter based on their own experiences. Write true or false.

• True

• False

Answer explanation

True. Philosophers often based their theories about the nature of matter on personal observations and experiences, leading to various interpretations and explanations.

Both Democritus and Dalton suggested that matter is made up of atoms. Write true or false.

• True

• False

Answer explanation

The statement is true because both Democritus and Dalton proposed that matter is composed of indivisible particles called atoms, laying the groundwork for atomic theory.

Dalton’s atomic theory stated that atoms separate, combine, or rearrange in chemical reactions. Write true or false.

• True

• False

Answer explanation

True. Dalton’s atomic theory indeed states that atoms can separate, combine, or rearrange during chemical reactions, which is a fundamental concept in chemistry.

Tags

NGSS.HS-PS1-7

Dalton’s atomic theory stated that matter is mostly empty space. Write true or false.

• True

• False

Answer explanation

Dalton's atomic theory emphasized that matter is made of indivisible atoms, not that it is mostly empty space. Therefore, the statement is false.

Tags

NGSS.HS-PS1-7

Dalton was correct in thinking that atoms could not be divided into smaller particles. Write true or false.

• True

• False

Answer explanation

The statement is false. Dalton's atomic theory proposed that atoms are indivisible, but later discoveries revealed that atoms can be divided into smaller particles, such as protons, neutrons, and electrons.

Tags

NGSS.HS-PS1-8

Dalton’s atomic theory stated that atoms of different elements combine in simple whole-number ratios to form compounds. Write true or false.

• True

• False

Answer explanation

True. Dalton’s atomic theory indeed states that atoms of different elements combine in simple whole-number ratios to form compounds, which is a fundamental concept in chemistry.

Tags

NGSS.MS-PS1-1

Dalton thought that all atoms of a specific element have the same mass. Write true or false.

• True

• False

Answer explanation

True. Dalton's atomic theory stated that all atoms of a specific element are identical in mass and properties, which is a foundational concept in chemistry.

Dalton’s atomic theory was based on careful measurements and extensive research. Write true or false.

• True

• False

Answer explanation

True. Dalton’s atomic theory was indeed based on careful measurements and extensive research, laying the foundation for modern chemistry.

Tags

NGSS.MS-PS1-5

The smallest particle of an element that retains the properties of that element is called an atom. Write true or false.

• True

• False

Answer explanation

True. An atom is the smallest particle of an element that retains its chemical properties, making this statement accurate.

Tags

NGSS.MS-PS1-1