2. Atoms & Elements
Atomic Theory
2. Atoms & Elements
Atomic Theory - Video Tutorials & Practice Problems
On a tight schedule?
Get a 10 bullets summary of the topicJohn Dalton, one of the "Fathers of Chemistry"is credited with modernizing the Atomic Theory.
The Modern Atomic Theory
1
concept
Atomic Theory
Video duration:
5mPlay a video:
2
example
Atomic Theory Example 1
Video duration:
1mPlay a video:
3
Problem
ProblemWhich of the following is NOT a component of Dalton's Atomic Theory?
A
A chemical reaction rearranges the grouping of atoms.
B
Atoms are composed of protons, neutrons, and electrons.
C
Atoms of a given element are chemical and physically identical.
D
Atoms of different elements combine in simple, whole number ratios to form compounds.
E
Matter is composed of atoms that are unable to divided any further.
4
Problem
ProblemDalton used the lightest element as his standard for atomic mass. What is this element?
A
Helium
B
Oxygen
C
Carbon
D
Hydrogen
E
Nitrogen
Do you want more practice?
We have more practice problems on Atomic Theory
Additional resources for Atomic Theory
PRACTICE PROBLEMS AND ACTIVITIES (30)
- A 1.0-g sample of carbon dioxide (CO2) is fully decomposed into its elements, yielding 0.273 g of carbon and 0...
- 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 fo...
- Which statements are consistent with Dalton's atomic theory as it was originally stated? Why? a. Sulfur and ox...
- Which statements are inconsistent with Dalton's atomic theory as it was originally stated? Why? a. All carbon...
- How does Dalton's atomic theory account for the law of mass conservation and the law of definite proportions?
- 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?
- Which of the following is not part of dalton's atomic theory?
- Which chemical reactions are not possible according to dalton's atomic theory?
- Which of the following is not part of dalton's atomic theory?
- Determine which statements are consistent with dalton's atomic theory.
- A chemical combination of matter in definite (fixed) proportions is a _____.
- A substance made up of two or more elements that have been chemically combined is called -
- What is the smallest particle of an element that still retains properties of that element?
- 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 minimum number of atoms that a particle must contain in order to qualify as a molecule?
- 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 is formed when two or more different kinds of atoms or elements join together chemically?
- 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?