Which of the following is TRUE?

One difference between mixtures and pure substances is that

How many of the listed substances are elements? HCl, S, Fe, Cu, Au, CaO, NaOH, NaCl, Al

Water is formed when two hydrogen atoms bond to an oxygen atom. The hydrogen and the oxygen in this example are different...

Which substances are compounds? Iron (Fe), Sodium Chloride (NaCl), Carbon Dioxide (CO2), Aluminum (Al)

Brass (like a trumpet) is mixtures of copper and zinc. Which best describes brass?

Under a microscope, sand looks like different types of rocks. It would best be categorized as...

Air is made up of gases like carbon dioxide, oxygen, and nitrogen. Air is a

When two or more substances combine, but each keeps its own properties, the new combination is called a(an)

Which of the following best describes ice?

Which of the following would have the least orderly particle arrangement?

Starting with an ice cube, name the states of matter you would see, in order, as the ice was heated?

What needs to be added to a substance to get it to change from a solid to a liquid to a gas?

Which is the state of matter with the following characteristics? - Has a definite, fixed volume. - Has a variable shape. - Particles are constantly moving and sliding by one another.

Which is the state of matter with the fastest moving particles?

How many protons would Aluminum have?

As matter changes state from gas to liquid, which of these statements is true?

How many neutrons would Neon have?

How would you calculate an atom’s atomic mass?

How many electrons would a neutral atom of Calcium have?

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