PS 3 L1-3

Identify what the electron dot diagram tells you about bonding.

• It shows the number of protons and neutrons in an atom.

• It indicates the arrangement of electrons in the inner energy levels.

• It displays the valence electrons, which are involved in bonding.

• It reveals the atomic mass and the chemical reactivity of the atom.

I identify the Flooded Crater on the picture

• A

• B

• C

• D

Explain why electric forces are essential to forming compounds.

• Electric forces attract like-charged particles to form stable compounds.

• Electric forces hold the nuclei of atoms together in a compound.

• Electric forces attract oppositely charged particles, enabling atoms to bond.

• Electric forces prevent atoms from losing or gaining electrons.

47.2 m = ___________km

• 472000

• 47200

• .0472

• 4.72

Avery is learning about different materials in her science class. Which of the following is a characteristic of plastics?

• They are always biodegradable

• They are flexible and lightweight

• They are made from natural materials

• They dissolve in water

What shows the elements a compound contains and the exact number of atoms of each element in a unit of that compound?

• a periodic table

• a molecular formula

• a chemical equation

• an atomic model

23 hL = ____________ L

• 230

• 2300

• .23

• 23

How many mm in a cm?

• 10

• 100

• 1000

• 10000

What is the primary function of the mitochondria in a cell?

• A) To store genetic information

• B) To produce energy in the form of ATP

• C) To synthesize proteins

• D) To regulate cell division

Which of the following best describes the process of photosynthesis?

• A) Conversion of glucose into oxygen and water

• B) Conversion of carbon dioxide and water into glucose and oxygen

• C) Conversion of oxygen into carbon dioxide and glucose

• D) Conversion of glucose and oxygen into carbon dioxide and water