Students react baking soda & vinegar.

Which of the following would provide the evidence that the number of atoms present

before a chemical reaction is equal to the number of atoms present after the chemical

reaction?

Gated channel in a cell membrane allows A. osmosis. B. simple diffusion. C. active transport. D. facilitated diffusion.

Based on what you know about the planets, which planet would be impossible for humans to land on

Why do you think this pest control technique is not practiced everywhere

In fruit flies the allele for long wings (L) is dominant and the allele for short wings (l) is recessive. What is the likely genotype of a fruit fly with short wings? A. Either LL or Ll B. Either Ll or ll C. Only LL D. Only ll

What actually burns when solids or liquids are set on fire?

Which climate favors mechanical weathering? A. dry climate B. cold climate C. warm climate D. desert climate

What would be a good hypothesis for does caffeine increase the heart rate of an earthworm

How many people have lost their lives on 9/11?

Place the following steps for the elongation of bacterial protein biosynthesis in the correct order: 1) GTP is hydrolyzed by elongation factor-Tu and the aminoacylated tRNA moves into the A site.

Which mineral is an abrasive that is used to make stone washed jeans