Flashcard on Atoms and the Law of Conservation of Mass

Front

What does the Law of Conservation of Mass state?

Back

Total mass of products equals mass of reactants.

Front

What do electrons determine in an atom?

Back

The atom's size and shape.

Front

What is the purpose of calculating the mass ratio in compounds?

Back

To find the mass of an element in combination with another element.

Front

What did Democritus teach about atoms?

Back

Atoms make up all things.

Front

What determines an atom's identity as an element?

Back

The number of protons.

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.