3) which is an example of a physical change? a) grinding pepper b) toasting bread c) lighting up a grill d) baking a cake

What amount of heat is removed to lower the temperature of 80 grams of water from 75º C to 45º C? The specific heat of liquid water is 4.18 J/gº C. A. - 10,000 J B. 10,000 J C. - 8,000 J D. 8,000 J

In a hydroelectric power plant water is stored high above a turbine as it falls the water spend the turbine blades to generate electricity which form of energy does the stored watch her have

Which of the following is not a phase change? melting of snow evaporation of water from the ocean condensation of water vapor to form clouds hydrogen and oxygen gas combining to form water vapor

Which organism is a tertiary consumer? clownfish brittle star killer whale octopus

How much dioxin is present in 2.6 l of this water? assume a density of 1.00 g/ml?

What is the [H3O+] of a solution with a pH of 2.56? 2.56 M, 2.75 x 10-3 M, 363 M, or - 0.408 M

What is the law of conservation of energy? A) energy can only be destroyed B) energy will always be renewed. C) energy cannot be created of destroyed. D) energy can never change forms.

Most metals are solid at room temperature, malleable, ductile, good conductors of heat and electricity, and react in acids to produce hydrogen gas. which of the properties mentioned is a chemical property? a. are malleable b. reacts with acids c.

Silver tarnishes when it comes into contact with hydrogen sulfide in the air. physical property or chemical property

When a volcanic irruption adds new rock to existing land and forms new islands is it considered destructive?