Atoms release energy when_

A. electrons move to a lower energy level

B. electrons move to a higher energy level

c. protons move to a higher energy level

D. protons move to a lower energy level

Thomas was comparing the amount of salt dissolved in ocean water to the amount dissolved in water from the great salt lake in Utah. which of earths atmosphere is Thomas interested in?

The transition elements are in Groups A. coinage metals B. iron triad C. alkaline earth metals D. alkali metals

A football field is 120 yards by 53.333 yards. What is the area of the football field in acres if 1 acre=43560 ft? Use correct significant figures when answering this question.

Which type of bonding is present in the sample of an element that is malleable

Malleability and ductility and characteristic of substances with a. covalent bonds. b. ionic bonds. c. Lewis structure d. metallic bonds.

What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.00 L of 0.500 M NH4NO2 decomposes at 25.0°C?

Read the given equation. Na2O2 + CO2 → Na2CO3 + O2 What volume of O2 gas is produced from 2.80 liters of CO2 at STP?

Drinking water may contain a low concentration of lead ion (Pb2) due to corrosion of old lead pipes. The EPA has determined that the maximum safe level of lead ion in water is 15 ppb.

A student examines the temperature and precipitation on a given day using a thermometer and a rain gauge. The student is measuring- A. temperature only B. climate only C. wind speed only D. specific weather conditions

Atoms - 1 2 3 4 Protons - 8 10 9 8 Neutrons - 10 9 9 11 Electrons - 8 10 9 8 Which two are isotopes of one another?