Which is NOT a means by which protists move?

a.

flagella

c.

muscle contraction

b.

cilia

d.

pseudopods

An electrically neutral atom of oxygen has eight electrons. What other facts do you know for sure about this atom? 1.) there are eight neutrons in the nucleus 2.) there are eight protons 3.) there is a charge of + 8 on an atom of beryllium 4.

What happens to the rate of evaporation of a liquid as the liquid is cooled?

In the space provided below, draw electron-dot diagrams for the following molecules: hydrogen (H2), ammonia (NH3), and methane (CH4). Remember that the dots represent the valence electrons.

Conduction happens as energy flows from a warmer object to a cooler object. Which of the following is an example of conduction?

Explain how the speed of a wave of sound or light can be changed?

Choose the compound below that contains at least one polar covalent bond, but is nonpolar. a. SeBr4 b. HCN c. ICl3 d. CF4 e. Both B and C are nonpolar and contain a polar covalent bond.

What is the best hypothesis? ahmari thinks that plants grow bigger if they have bigger pots to grow in ahmari takes four different pots 2 inches 3 inches 4 inches 5 inches wide he place two radish seeds in each pot and place them on windowsill in

Organisms in Kingdom Archaebacteria live in environments that are very hot or very cold. Which other characteristic is common to organisms in this kingdom? A. They are viruses. B. They are green. C. They live without oxygen. D.

The Lewis structure for CIF^2 + is shown. What is the electron-pair geometry and the molecular geometry around the central atom

A reaction has a rate constant of 0.0396 sec-1; how long will it take (in minutes) until 0.292 mol/L of the compound is left, if there was 0.803 mol/L at the start? (give answer to 3 decimal places) ?