An element is determined by the number of ___________________ (also known as its atomic number).

In a neutral atom the amount of electrons is electron is equal to

When an atom gains electrons, it has a ________ net charge.

Which elements are to the right of the zig zag?

Which of these are properties of non-metals

You have a red substance that looks uniform, has a nice smell, and you cannot identify crystals with the naked eye, however, when you boil the substance, the liquid part evaporates and a red solid remains on the pot. Your substance is most likely a:

Which of these properties can you use to tell an element apart from a mixture?

Ionic or covalent?

NaBr

Ionic or covalent?

O₂

Ionic or covalent?

CaCl₂

Which of these diagrams represents the formation of a covalent bond?

Which characteristic of a substance is considered a chemical property?

What is happening to the particles in the substance between points D and E?

If you are given 30 g of ice, wood (oak), ethanol, and gold. Which one would have a larger volume?

An object has a mass of 125 g and a volume of 100 mL. Will the object sink or float in water?

Which of the following is NOT an indicatoor that a chemical change took place?

In a reaction A + B ----> C, reactant A has 10g and product C has 21g. How many grams should reactant B have?

According to the pH range which substance is more acidic than lemon juice

Identify the following substance.

Identify the following substance

Which chemical equation supports the law of conservation of mass?

Which of the following equations is balanced?

Observe the reaction shown here. The formula for this equation is $$N_2\ +\ H_2\ \rightarrow\ NH_3$$  . What do you observe about the atoms of hydrogen in this reaction?