How can humans decrease the rate of endangered or extinct species? Question 4 options: Introduce new predators to an environment. Minimize habitat destruction. Pollute other environments. Create and populate more zoos.

Write and balance the equation for the combination of ammonia gas with solid copper (II) oxide to produce copper metal, nitrogen gas, and liquid water. What are the states of matter of each element/compound of the equation?

The two isotopes of chlorine are 35/17 cl and 37/17cl. which isotope is the most abundant

What type of energy is produced by a geyser? Answers Chemical energy Thermal energy Nuclear energy Radiant energy

An element's atomic number is 45. how many electrons would an atom of this element have?

What happens when an electron falls to a lower energy level?

Is mass conserved when 200 g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

For wach of the following cases, state whether the density of the object increases, decreases, or remains the same: (a) A sample of chlorine gas is compressed (b) A lead weight is carried up a high mountain. (c) A sample of water is frozen.

A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.

The state of matter for an object which has a definite volume but not a definite shape is ... Solid state Liquid state Gaseous state

Using the periodic table, determine the number of neutrons in a carbon.