Lab 3.3 and 3.4 Summative Assessment(bonds and chem equations)

Ionic bonds are formed when ---

• atoms of non-metals join to share valence electrons

• atoms of metals associate to form “a sea of electrons”

• an atom of a metal donates a valence electron to an atom of a nonmetal

• an atom of one element gains or loses neutrons to the atom of another element

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NGSS.MS-PS1-5

When atoms of non-metals join with atoms of non-metals, they will most likely form ---

• metallic bonds

• covalent bonds

• ionic bonds

• static bonds

The Law of Conservation of Mass states that -

• cells cannot be created or destroyed

• light can be reflected off an uneven surface

• every action has an equal and opposite reaction

• matter cannot be created or destroyed

Tags

NGSS.MS-PS1-5

Label the parts of the reaction.

a

b

Reactants

Products

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

When an egg rots, milk sours, or an apple slice turns brown, what kind of change has taken place?

• Physical

• Phase

• Chemical

• Appearance

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which element below will form an ionic bond with oxygen (O)?

• Sulfur (S)

• Hydrogen (H)

• Carbon (C)

• Magnesium (Mg)

Which of the following is a chemical change?

• Salt is dissolved in water.

• Water is boiled on a stove.

• Gasoline combusts in an engine.

• Copper metal is stretched into a long wire.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which of the following is an example of a physical change but not a chemical change?

• A log gives off heat and light as it burns.

• A tree stores energy from the Sun in its fruit.

• A penny lost in the grass slowly changes color.

• A water pipe freezes and cracks on a cold night.

What type of bond will form if Sodium (Na) combines with Chlorine (Cl)?

• Covalent Bond

• Ionic Bond

• Hydrogen Bond

• Metallic Bond

Tags

NGSS.MS-PS1-2

Which substance can be broken down by chemical means?

• CO

• Ce

• Ca

• Cu