Q: The point in the titration at which an indicator changes color is called what? Choices: - zeta point - tipping point - chromatic point - end point A:
end point

(Question)
Q: What material used for helium-filled balloons is dense, strong and opaque, with a high molecular mass that forms films that have many fewer pores than rubber? Choices: - fiberglass - cellophane - foil - mylar A:
(Answer)
mylar

Ques: Q: Gram-negative bacteria have a cell wall made of peptidoglycan, whereas gram-positive bacteria have a cell wall made of what? Choices: - choanocyte acid - solmization acid - hydrolic acid - lipoteichoic acid A:
Ans: lipoteichoic acid

(Q).
Q: What types of energy is released during a chemical reaction? Choices: - human, magnetic, electrical - temperature , electricity , light - magnetism, electricity, light - heat, electricity, light A:
(A).
heat, electricity, light

Ques:Q: What type of learning is based on past experience and reasoning? Choices: - experiment - theory - reflect - insight A:

Ans:insight

Q: Natural gas is often found along with what other fossil fuels in underground deposits? Choices: - methane and oil - coal and methane - repository and oil - coal and oil A:
coal and oil