Dalton's Ideas

The mass of all the particles before a chemical reaction and after a chemical reaction will always be equal.

• Law of Conservation of Mass

• Law of Definite Proportions

• Law of Multiple Proportions

• Avogadro's Hypothesis

Tags

NGSS.MS-PS1-5

If 3.68 g of a compound breaks down into 2.68 g of oxygen and ___ g of carbon.

• 2.68 g

• 3.68 g

• 1.00 g

• 6.36 g

Tags

NGSS.MS-PS1-5

If 5.00 g of sodium combines with 7.70 g of chlorine, what mass of the product sodium chloride will form?

• 5.00 g

• 7.70 g

• 12.70 g

• 2.70 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Three compounds are found to contain the following amounts of the elements: 12 g carbon and 1 g oxygen; 12 g carbon and 2 g oxygen; 12 g carbon and 3 g oxygen. Which of Dalton's ideas is best shown?

• matter is made of tiny, indivisible particles called atoms

• all atoms of one element are identical to each other but different from other elements

• in a chemical reaction, atoms are rearranged, not created or destroyed

• compounds form when two or more different types of elements combine in small whole-number ratios

When 20.0 g of calcium reacts with chlorine, the product has a total mass of 55.50 g. What mass of chlorine was used?

• 75.50 g

• 35.50 g

• 40.00 g

• 55.50 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If a 10.00 g sample of rust (made of iron and oxygen) contains 3.00 g of oxygen, what mass of oxygen will be found in 20.00 g of rust?

• 3.00 g

• 10.00 g

• 6.00 g

• 7.00 g

Tags

NGSS.MS-PS1-5

When 4.00 g of aluminum reacts with 35.49 g of bromine, the product has a mass of 39.49 g. Which of Dalton's ideas is most reflected?

• matter is made of tiny, indivisible particles called atoms

• all atoms of one element are identical to each other but different from other elements

• in a chemical reaction, atoms are rearranged, not created or destroyed

• compounds form when two or more different types of elements combine in small whole-number ratios

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When the compound known as caustic lime is heated, it is found to break down into two components. Further heating of those products do not result in any new products. Which of Dalton's ideas is being shown?

• matter is made of tiny, indivisible particles called atoms

• all atoms of one element are identical to each other but different from other elements

• in a chemical reaction, atoms are rearranged, not created or destroyed

• compounds form when two or more different types of elements combine in small whole-number ratios

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A particular compound always contains the same ratio of elements.

• Law of Conservation of Mass

• Law of Definite Proportions

• Law of Multiple Proportions

• Avogadro's Hypothesis

When two elements combine to form more than one compound, the ratios of the second element are found to be small whole-number multiples.

• Law of Conservation of Mass

• Law of Definite Proportions

• Law of Multiple Proportions

• Avogadro's Hypothesis