A farmer has a large field with one type of

crop. This area has high biodiversity.

Agree

Disagree

Which solution below has the highest concentration of hydroxide ions? a. ph = 3.21 b. ph = 12.6 c. ph = 7.93 d. ph = 9.82 e. ph = 7.00?

Match each term to its example. element compound ion isotopes cation anion A. an atom that has developed a positive charge B. sodium chloride (NaCl) C. an atom that has lost or gained an electron D.

A hydrocarbon with only single bonds is classified as a. an alkene. b. an alkyne. c. saturated. d. unsaturated.

What are the allotropes of sulphur And phosphorus?

Daisy's dad has a mass is 70 kg, which is twice Daisy's mass. What is his weight? (Note, be sure to write in the unit. The unit is N)

What do nucleus act as

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?

Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants).

How many molecules are there in 79g of Fe2O3?