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Chemistry

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Myriam Morissette

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2y ago
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Cards in this guide (14)
What is a qualitative observation

A Qualitative Observation is an observation that uses the five senses. sight, smell, hearing, touch, and taste. An example of this would be: "This tree has bright green leaves that have soft bumps on them."

The opposite is a quantitative observation, which is measured in numbers, such as the weight or length of an object. For example, 5 pounds or 100 inches. For instance "The stratosphere begins 40 kilometers above the surface of Earth."

Why do water molecules stick to each other

They are polar and form hydrogen bonds

The goal of applied science is

to solve a problem.

to improve a situation.

Which atoms and how many of each is present in a water molecule

H2O. Two atoms of hydrogen and one atom of oxygen.

Which chemical bond most likely stores the most energy

C=c

Double carbon-carbon bond

What kind of molecule is formed when many disaccharide molecules are combined

A combination of many disaccharides will yield a polysaccharaide, such as starch or cellulose

What do bacteria have in common with the cells of other living organisms

They have ribosomes.They contain cytoplasm.

Some things bacteria have in common with cells of other living organisms is they both have chromosomes, they both have organelles and a nucleus, and are alive.

they have a cell membrane

Which force of attraction helps move water up through plants

hydrogen bonds

What was Rudolf Virchow trying to prove through his work

Spontaneous generation does not happen.

Which adds evidence to the idea that the cell is the basic unit of life

Many organims are made of one cell.

If water were a nonpolar molecule how would its properties be different

water would not be able to form hydrogen bonds (wrong)


Apex - Water would not rise inside plants :P

Which one is better for moving more nutrients in and out the cell surface or more volume

more volume decreases the surface area of the cell thus making the distance of transporting nutrients in and out of the cell less. so more volume is better

What do all cells have in common

They all Contain DNA

Pure liquid water has a pH of what

7

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