Basic Concepts of Matter and Life

What is matter?

• Anything that has mass and occupies space

• Anything that is invisible

• Anything that is weightless

• Anything that is solid

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What is the smallest part of an element that still has the properties of that element?

• Molecule

• Atom

• Cell

• Organ

Which of the following is the most basic unit of life?

• Tissue

• Organ

• Cell

• Organism

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Which of the following elements is necessary for life?

• Helium

• Carbon

• Neon

• Argon

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What is the chemical formula for water?

• H2O2

• H2O

• CO2

• O2

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How many hydrogen atoms are in a water molecule?

• 1

• 2

• 3

• 4

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NGSS.MS-PS1-1

Why is water critical for life’s processes?

• It is a nonpolar molecule

• It is a polar molecule

• It is a metallic molecule

• It is an ionic molecule

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What happens to nonpolar molecules in water?

• They dissolve

• They form positive and negative poles

• They do not dissolve

• They become polar

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What property of water makes it an excellent solvent?

• Cohesion

• Adhesion

• High specific heat

• It is a polar molecule

What does cohesion cause in liquids?

• Low surface tension

• High surface tension

• No surface tension

• Variable surface tension