CHEMISTRY MIDDLE SCHOOL

The color of a mineral in powdered form is the mineral"s?

Answers

Answer 1
Answer: The color of a mineral's powdered form is the mineral's streak.
Answer 2
Answer: Streak is the color of the mineral in powdered form. Streak shows true color of the mineral. In large form, trace minerals can change the color appearance of a mineral by reflecting the light in a certain way. Trace miners have little influence on the reflection of the small powdery particles of the streak.

The streak of metallic minerals tends to appear dark because the small particles of the streak absorb the light hitting them. Non-metallic particles tend to reflect most of the light so they appear lighter in color or almost white.

Because streak is a more accurate illustration of the mineral's color, streak is a more reliable property of minerals than color for identification.

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Photosynthesis is a vital process for plants, animals and humans, and the environment? Give at least two examples of how plants, animals and humans, and the environment benefit from photosynthesis.

Answers

When photosynthesis occurs, carbon dioxide is consumed by the plant and oxygen is the by-product of the reaction. Oxygen is vital to survival since we need it to breathe. 

Photosynthesis is how plants make food for themselves. We get our food directly (we eat vegetables) and indirectly (herbivorous animals)  from plants. 
photosynthesis produces food for plants
this requires carbon dioxide and water to react in the present of sunlight and also chlorophyll to produce glucose and oxygen
1.animals need the oxygen supplied for respiration
2.photosynthesis helps to balance the carbon dioxide content in air, it reduces the amount of carbon dioxide thereby reducing occurrence of global warming
3.also there are animals that depend on plants for their food ,herbivores,without photosynthesis the crop will die depriving the animal of its food supply

Which type of organic molecule is an amino acid? A. building block of carbohydrates B. building block of proteins C. building block of nucleic acids D. building block of lipids

Answers

B. building block of proteins
Amino acids are the monomer (building blocks) of proteins. On repeating, they constitute a protein which is polymer of amino acid.

In short, Your Answer would be Option B

Hope this helps!

I do not get it hard science it is so hard

Answers

well when the medicine reaches ur stomach all the nutrients from the pill break up making it go to different parts of ur body

Answer:

A pill is usually absorbed into the blood through the stomach walls after it is swallowed – these can become active in a few minutes but usually take an hour or two to reach the highest concentration in the blood. IV drugs are injected directly into the blood work much faster – sometimes in seconds or minutes.

Calcium hydroxide reacts with a substance to produce calcium carbonate
name the substance

Answers

Calcium Hydroxide (Ca(OH)2) reacts with the Carbon Dioxide (CO2) present in the Air to form Calcium Carbonate (CaCO3) and Water (H2O).

The equation looks something like this -->

Ca(OH)2 + CO2 = CaCO3 + H2O
Let the substance be p

CaOH + p = CaCO3

following the laws of chemical reactions and law of conservation of mass, p will be 1 atom of carbon dioxide and 2 atoms of oxygen. Thus, the p will be CO2.

Thus, CaOH + CO2 = CaCO3

Please note that during this process, water will also be produced.

How are evaporation and condensation alike

Answers

well,condensation is more like gas becoming liquid or solid while evaporation is liquid becoming gas.

the thing those two have in common is that they have been gas or are gas.
Condensation changes gas to solid/liquid. Evaporation turns liquid into gas

What is a good why to study science

Answers

Take lots of notes! However, keep them bullet point style no need to write an essay.

Look over those notes (Color coordinating and highlighting helps.

Lastly don't throw away handouts and worksheets keep them all!!!
Read all your text books
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