TCI Lesson 2 Vocabulary

Front

What is the atomic composition of a substance?

Back

The types of elements that make up a substance, as well as the specific ratios of atoms of each kind of element that make it up. Example: The atomic composition of water is 2 hydrogens and 1 oxygen.

Front

What is a molecule?

Back

A group of two or more atoms that are held together by chemical bonds; a molecule has a unique composition and structure. Example: Two atoms join together to make a molecule.

Front

What is a chemical bond?

Back

The connection between atoms in more complex particles. Example: The chemical bond is what holds two atoms together.

Front

What is a model in science?

Back

A representation of an object which makes important aspects easier to see. Example: I made a model so I could see the shapes better.

Front

What is chemical structure?

Back

The specific way in which the bonds and atoms are arranged within the molecules of a substance. Example: The chemical structure of water looks like Mickey Mouse.

Front

What is a crystal?

Back

A solid material whose atoms are arranged in a highly ordered, repeating pattern. Example: Salt is a common crystal.

Front

What is a polymer?

Back

A large molecule composed of many repeated subunits (monomers). Example: Plastic is made of long chains of polymers.

Front

What is the difference between atomic composition and chemical structure?

Back

Atomic composition refers to the types and ratios of atoms in a substance, while chemical structure refers to the arrangement of those atoms and bonds.

Front

What is the significance of chemical bonds?

Back

Chemical bonds are essential for forming molecules and compounds, determining the properties and behavior of substances.

Front

What is an example of a simple molecule?

Back

Water (H2O) is a simple molecule made of two hydrogen atoms and one oxygen atom.