If you dont know the answer then dont put it
Which of the following is NOT an indicatio...
Biology, 27.05.2020 12:57 alydiale584
If you dont know the answer then dont put it
Which of the following is NOT an indication that a chemical reaction took place?
Question 1 options:
Change in shape
New substance formed
Precipitate forms
Bubbles
Chemical reactions must be because...
Question 2 options:
Larger on the product side because new substances are produced
Not enough information
Smaller on the reactant side because the reactants are used up
Balanced because of the law of conservation of matter and energy
Question 3
Fill in the blank: The number of atoms of an element in a molecule are indicated by the .
Why are buffers important in living organisms?
Question 4 options:
Buffers kill bacteria and viruses
Buffers cause acids to break down food
Buffers make bases work more effectively
Buffers prevent pH changes in body systems
Ionic bonds occur between and .
Question 5 options:
nonmetal and nonmetal
metal and nonmetal
metal and metal
Answers: 1
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