Which property is typical of an acid?

A. pH greater than 7

B. has a sour taste

C. produces hydroxide ions

D. turns litmus paper blue

Match the symbols with the element name. 1 Ag zinc 2. Pb silver 3. o chlorine ο nitrogen oxygen ο lead Ο carbon 7. Ar argon 8. Zn

Which equation below can be used to describe the overall changes taking place during photosynthesis? A. 6CO2 + 6O2 C6H12O6 + 6H2O B. 6CO2 + 6H2O C6H12O6 + 6O2 C. C6H12O6 + 6H2O6CO2 + 6O2 D. C6H12O6 + 6O2 6CO2 + 6H2O

What are 3 steps scientists take to evaluate a science explanation?

Which one of the following supports the hypothesis that life has changed over time? 1. Fossils are distinct from rock layer to rock layer 2. The cell has no membrane 3. Prokaryotes has no nucleus 4. Some fossil plants have deep roots

Which solution has the highest pH? A) 0.10 M HBr (aq) B) 0.10 M HI (aq) C) 0.10 M HF (aq) D) 0.10 M HCl (aq) E) 0.10 M HClO4 (aq)

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Examples of chemical and physical changes

Is when hot parts of the earth rise as cooler parts sink due to differences in density.

Distinguish between the structures of arteries, capillaries, and venies. what is the function of each.