2. Atoms & Elements

Which of the following is NOT a component of Dalton's Atomic Theory?

Dalton used the lightest element as his standard for atomic mass. What is this element?

A 1.0-g sample of carbon dioxide (CO2) is fully decomposed into its elements, yielding 0.273 g of carbon and 0.727 g of oxygen. If a sample of a different compound decomposes into 0.429 g of carbon and 0.571 g of oxygen, what is its ratio of the mass of O to C? (c) According to Dalton's atomic theory, what is the empirical formula of the second compound?

A chemist finds that 30.82 g of nitrogen will react with 17.60, 35.20, 70.40, or 88.00 g of oxygen to form four different compounds. (b) How do the numbers in part (a) support Dalton's atomic theory?

Who described atoms as small spheres that could not be divided into anything smaller?

What experimental evidence led to the development of the current atomic model from the previous one?

The smallest unit of an element that maintains the properties of that element is a(n)

Which of the following most accurately represents John Dalton's model of the atom?

The chemical combination of two or more atoms of different elements produces a(n) _____.

Modern atomic theory states that atoms are neutral. How is this neutrality achieved in atoms?

A(n) ________________________ is a substance that is made from atoms of different elements.

What is the smallest particle of an element that retains the properties of that element?

What is the smallest unit of an element that still maintains the properties of that element?

The smallest particle an element can be broken down into and still be the same element.

What is the smallest part of an element that still retains properties of that element?

The ____________________ is considered the basic unit of any element.

What can form as a result of a chemical reaction? compounds isotopes alpha particles beta particles

Based on what you learned about atoms, select all of the correct statements from the following list.

What is the smallest unit of an element that still maintains the properties of that element?

What is the smallest unit of an element that retains the properties of that element?