Simple Molecules/ Extended Structures

How many atoms are there?

• 3

• 2

• 1

• 0

Tags

NGSS.MS-PS1-1

What is the example in the image?

• The electrons in an atom

• A diatomic structure

• An extended structure (crystal lattice)

• A water molecule

Tags

NGSS.MS-PS1-1

What is an extended structure?

• A type of extended structure that is made of many smaller, atoms in a chain.

• 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.

• A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern; the subunit can be individual atoms (like Carbon) or a molecule (like propane or butane).

• A group of two or more atoms that are held together by chemical bonds.

Tags

NGSS.MS-PS1-1

Is the following a picture of a simple compound or an extended structure?

• Simple compound 
• Extended structure

Tags

NGSS.MS-PS1-1

Which of the following describes a carbon dioxide molecule (2 answers)

• carbon dioxide molecules are made of more than one element

• carbon dioxide molecules are made of only one element

• carbon dioxide molecules are considered to be simple molecules

• carbon dioxide molecules are considered to be extended structures

Tags

NGSS.MS-PS1-1

Coal is made from carbon, and the carbon repeats itself in a pattern.  Because of this repeating process, we call the sub-units of coal molecules

• compounds.

• simple molecules.

•  mixtures.

• extended structures.

Tags

NGSS.MS-PS1-1

A group of two or more atoms that are held together by chemical bonds; it has a unique composition and structure

• Chemical structure

• Model

• Molecule

• Polymer

Tags

NGSS.MS-PS1-1

A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern.

• Crystal

• Model

• Molecule

• Polymer

Tags

NGSS.MS-PS1-1

What is the atomic difference between water (H₂O) and hydrogen peroxide (H₂O₂)?

• The only difference is that they have different structures.

• Hydrogen peroxide has one more oxygen atom than water.

• The only difference is that they have different compositions.

• Atoms in water have stronger bonds than atoms in hydrogen peroxide.

Tags

NGSS.MS-PS1-1

Why is graphite a good writing tool, whereas diamond is not?

• Graphite has hexagonal sheets which are weakly connected to each other, whereas diamond has a strong cubic structure.

• Graphite has hexagonal sheets which are strongly connected to each other, whereas diamond has a weak cubic structure.

• Graphite has a weak cubic structure, whereas diamond has hexagonal sheets which are strongly connected to each other.

• Graphite has a strong cubic structure, whereas diamond has hexagonal sheets which are weakly connected to each other.

Tags

NGSS.MS-PS1-1