Which of the following is a physical change?

-Burning

-Rusting

-Freezing

-Oxidation

Is salad biotic or abiotic

Predict how the gene pool will change over time Darwin's Natural selection sheet.

im found only in plant cells im as green as can be i make food for the plant using the suns energy what am i?

When a light bulb is turned on, electrical energy is transformed into two other types of energy. What are they and support your answer with evidence.

Which element above has 6 protons in its nucleus? a. oxygen b. carbon c. phosphorus d. sulfur?

Extend E1 Explain why the arrangement, movement and energy of particles change during changes of state.

What is in a banana? give me specifics?!

Addition of an excess of lead (II) nitrate to a 50.0mL solution of magnesium chloride caused a formation of 7.35g of lead (II) chloride precipitate. What was the molar concentration of chloride ions in the solution (in mol/L) ?

2.70 L of a gas has a pressure of 0.63 atm. What is the volume of the gas at 105 kPa?

Which statements describe Rutherford's model of the atom? Select all that apply.