Dalton's Ideas

Front

What is Dalton's Atomic Theory?

Back

Dalton's Atomic Theory states that matter is made up of tiny, indivisible particles called atoms, which cannot be created or destroyed in a chemical reaction.

Front

What does it mean that atoms of one element are identical?

Back

Atoms of one element are identical in mass and properties, but different from atoms of other elements.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that in a chemical reaction, the total mass of the reactants equals the total mass of the products.

Front

What is a compound?

Back

A compound is a substance formed when two or more different types of elements combine in fixed, small whole-number ratios.

Front

How do you calculate the mass of a product formed in a reaction?

Back

To calculate the mass of a product, add the masses of the reactants together.

Front

If 3.68 g of a compound breaks down into 2.68 g of oxygen, what is the mass of carbon?

Back

1.00 g

Front

If 5.00 g of sodium combines with 7.70 g of chlorine, what is the mass of sodium chloride formed?

Back

12.70 g

Front

When 20.0 g of calcium reacts with chlorine to form a product of 55.50 g, what mass of chlorine was used?

Back

35.50 g

Front

What does it mean for compounds to form in small whole-number ratios?

Back

It means that elements combine in specific, fixed ratios, such as 1:1, 1:2, etc., to form compounds.

Front

What is an example of Dalton's idea about compounds?

Back

The example of compounds containing 12 g of carbon and varying amounts of oxygen illustrates that compounds form in small whole-number ratios.