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Russel Paucek

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4y ago
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Cards in this guide (11)
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."

What is a water molecule made of

H2o

What happens when a sodium atom loses an electron in its outer energy shell

it becomes a positive ion
it becomes a positive ion

Why does water roll off the surface of a leaf

because the leaf is non polar

or

Because the leaf is coated in lipid molecules

Which of the following would be considered a qualitative observation

The color of flowers is compared.

The height of radish seedlings is measured

Which equation has water as a product in the chemical reaction-

bromine water? The reaction between hexene, bromine, and water is an addition reaction.

Which best describes the nucleus of an atom

It is the part of the atom with the greatest mass.

A lithium atom that has lost an electron it comes near a Chlorine atom that has gained an electron what happens

They form an ionic compound

The proper treatment of experimental subjects helps to ensure which of the following

Apex - good and reliable data

Pure liquid water has a pH of what

7

Which atoms form an ionic bond

Magnesium and bromine (Apex)

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