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Science Midterm (part one) > Science Midterm Chapter 13 (add important questions from ur slides) > Flashcards

Science Midterm Chapter 13 (add important questions from ur slides) Flashcards

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Biology 101 flashcards
1
Q

What are the two categories that make up substances?

A

Elements and Compounds

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2
Q

Chlorine, Oxygen, and Carbon are all examples of what type of substance?

A

Elements

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3
Q

True or False: Compounds can be physically separated.

A

False

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4
Q

Is the composition of substances always the same or different?

A

Same

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5
Q

True or False: Elements have ionic and covalent bonds.

A

False

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6
Q

What are the two types of mixtures?

A

Homogeneous and Heterogeneous

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7
Q

What is another name for a homogeneous mixture?

A

Solution

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8
Q

True or False: The particles that make up a homogeneous are unevenly mixed.

A

False

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9
Q

Mixing is a ______ change.

A

Physical

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10
Q

What is an acid?

A

A substance that produces a hydronium ion when dissolved in water.

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11
Q

Can mixtures be separated, and by what method?

A

Yes, Physical

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12
Q

What is a hydronium ion?

A

A positively charged ion formed when an acid dissolves in water.

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13
Q

What are the two parts of a solution?

A

Solvent, Solute

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14
Q

Nearly all acid molecules contain one or more _______ atoms.

A

Hydrogen

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15
Q

What part of a solution exists in the greatest quantity?

A

Solvent

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16
Q

When an acid mixes with _______, the ________ atom separates from the acid.

A

Water, Hydrogen

17
Q

What is the chemical formula for a hydronium ion?

A

H₃O⁺

18
Q

What is a base?

A

A substance that produces hydroxide ions when dissolved in water.

19
Q

What is a hydroxide ion?

A

A negatively charged ion formed when a base dissolves in water.

20
Q

What is one practical use of bases in everyday life?

A

Cleansers like shampoo, dish detergent, and window cleaner.

21
Q

What type of taste do bases add to food?

A

Bitterness

22
Q

What is the chemical formula for a hydroxide ion?

A

OH-

23
Q

True or False: Solutions can exist in all three states of matter.

A

True

24
Q

True or False: Water almost always exists as a solution.

A

True

25
Q

Like dissolves _______.

A

Like

Science Midterm (part one) (8 decks)

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