11. It composed of two or more pure substance. What it is?
A Mixture
C. Compound
B. Substance
D. Element
12. Which of the following does NOT prove that the molecules of a material are always moving?
A. Aroma of boiling coffee
C. The sweetest of sugar
B. Evaporation of water
D. Soil particles of carried by water
13. When you were able to observe the sweet smell of ripe fruit from the dining table, you
became aware that a process had occurred. What was this natural process?
CA. Digestion
C. Diffusion
B. Absorption
D. Assimilation
14. At the right is a picture of a molecule of water as seen under a very crude
electron microscope. What makes up a molecule of water?
A. An atom of hydrogen and three atoms
oxygen
B. An atom of oxygen and two atoms of
hydrogen.
C. Three atoms of hydrogen and two atoms
of oxygen
Molecule of water
D. An atom hydrogen and three atoms
oxygen
HELP PLEASE​