CHEMISTRY MIDDLE SCHOOL

What are the three states in which most matter occurs

Answers

Answer 1
Answer: solid, liquid, and gas.
Answer 2
Answer: Solids, liquids, gas'

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The collision of one continental plate with another may produce what ?

Answers

It causes earthquakes. I hope this helps you :]

Important substances found in food, which promote growth and good health

Answers

vitamins and nutrients
Protein would be the main one.

What happens when you mix acid and base?

Answers

Acids are chemicals with a pH less than 7 that can donate a proton or H+ ion in a reaction. Bases have a pH greater than 7 and can accept a proton or produce an OH- ion in a reaction. If you mix equal amounts of a strong acid and a strong base, the two chemicals essentially cancel each other out and produce a salt and water. Mixing equal amounts of a strong acid with a strong base also produces a neutral pH (pH = 7) solution. This is called a neauturization and looks like 
HA + BOH → BA + H2O + heat

A chemical reaction by definition forms new chemicals (called the products) from the initial chemicals (called the reactants). It should make sense that the identity of the products formed depends on what reactants we start with. Adding an acid to a base is an example of a chemical reaction, so we should expect to see new products. Although there is a pattern to this type of reaction, ultimately the products formed depend on what acid and what base are used.

I hoped I helped

Describe the basic particle from which all elements are made

Answers

nucleus: contains protons and neutrons 
electron cloud: surrounds the necules and contains the electrons 

Electrons- negatively charged, smallest particle 
Protons- positively charged 
Neutrons- no charge 

You leave a piece of bread outside for a few days. It forms green and blue mold. It smells awful. A chemical change has occurred - true or falseexplain you answer stating facts that support your answer.

Answers

Answer:

False

Explanation:

It is not a chemical change, it is a physical change because the molecules of the bread didn't  change, the form of the bread did

Which atmospheric gas has the greatest effect on the weather conditions associated with an air mass?a. oxygen
b. nitrogen
c. methane
d. water vapor


Thanks!

Answers

D.water vapor is the answer
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Which classification is the most specific for the element uranium a . actinide-series element b . transition metalc . inner transition metald . lanthanides-series element