What's the name of the model that democritus and leucippus created?

What would be the mass number of a nitrogen atom with 8 neutrons?

An atom has a mass number of 9 and 5 neutrons. What is its atomic number?

What has more kinetic energy 10kg of bees flying at 10m/s or 10kg of birds flying at 10m/s? Why?

Which of the following are observations? The candle floats. The tires are flat. The dog is barking. The tire is flat because of a decrease in temperature. If a person walks by, then the dog will bark.

Which statement describes how maps represent Earth's surface? They have a three-dimensional surface. They use symbols to represent land features. They all use the same scale to show distance. They accurately represent the relative shape of Earth.

If you have 6 moles of CH4 how many moles of H2O can be produced

What is the definition of substance in your own words.

A 1.3 g sample of gold (specific heat capacity = 0.130 J/g °C) is heated using 86.9 J of energy. If the original temperature of the gold is 25.0°C, what is its final temperature?

In what applications might coal replace petroleum based fuel

How many molecules are in 7.5 mol of h2o