Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
According to the law of definite proportions any two samples of water H2O
|
Both
|
|
|
The law that states that mass camnot be created or destroyed in ordinary chemical and physical changes is know as the law of
|
Conservation of mass
|
|
|
When 2 electrons combine to form two or more compounds, the mass of one element that combines with a given mass of the other element is in the ratio pf small whole numbers, this statement is know as the law of
|
Multiple proportions
|
|
|
Which 2 compounds are examples of the law of multiple proportions?
|
CO and CO2
|
|
|
The observation that the mass of carbon dioxide formed from the reaction of carbon and oxygen equals the combined masses of the carbon and oxygen that reacted the law of
|
Conservation of mass
|
|
|
Dalton's atomic theory helped explain the law of conservation of mass because it stated that atoms
|
Could not be created or destroyed
|
|
|
Dalton's atomic theory does not support which of the following observations
|
Atoms of most elements are made up of protons, neutrons, and electrons
|
|
|
Dalton failed to recognize that substances can exist in the form of
|
A2
|
|
|
From observing that, within a cathode tube, cathode rays could move a paddle wheel placed on their path, scientist concluded that
|
Particles were passing from the cathode to the anode
|
|
|
The behavior of cathode rays led scientists to conclude that rays were composed of
|
Negatively charged particles
|
|
|
Because of most of the alpha particles in rutherfords gold-foil experiments passed through the foil, he concluded that
|
Atoms were mostly empty space
|
|
|
Because a few alpha particles we're deflected back from the foil in rutherfords gold foil experiments, he concede that the particles were
|
Repelled by tiny regions of high positive charge
|
|
|
Which of the following descriptions is not a characteristic of the nucleus of an atom
|
Accounts for most of the atoms volume
|
