Basic Chemistry and Properties of Water

Electrons are ______ in covalent bonds.  

• Shared
• Transferred
• Given up
• Lost

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NGSS.MS-PS1-1

NaCl is bonded by what kind of bond?

• Ionic
• Covalent
• molecule
• hydrogen

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NGSS.HS-PS1-1

The smallest unit of matter that can enter chemical reaction

• element
• compound
• molecule
• atom

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

A H2O molecule is bonded by what kind of bond?

• hydrogen
• ionic
• covalent
• electronic

Tags

NGSS.MS-PS1-1

When an atom loses electrons it becomes

• a positive ion
• a negative ion
• both positive and negative ion
• a neutral ion

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What do the black dots represent?

• molecules
• covalent bond
• hydrogen bond
• Hydroxide compound

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NGSS.MS-PS1-1

If an atom has 8 protons and 10 electrons, what is its charge?

• Positive
• Neutral
• Negative
• It depends on its size

Tags

NGSS.MS-PS1-1

What make atoms react with each other and create bonds?

• The atomic number
• The atomic Mass
• The electrons of the outer shell
• The electrons of the inner shell

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Within the cells of plants that form the xylem and phloem a unique process occurs. The water molecules bond to each other. What is this process called?

• adhesion
• cohesion
• nonpolar
• covalent bonding

One of the unique characteristics of water is its ability to maintain a constant temperature within large aquatic systems. Why is this important to an aquatic environment?

• aquatic organisms cannot survive in warm water environments
• most aquatic organisms cannot survive in cold water environments
• aquatic organisms can only survive within a very small range of water temperatures
• most aquatic organisms cannot survive a rapid increase or decrease in water temperature

Tags

NGSS.MS-LS2-4