What is a pure substance made of two or more elements that are chemically combined?

Which of the following describes a mixture?

Which of the following substances can be separated into simpler substances only by chemical means?

Which of these is NOT considered a pure substance

Because zinc can combine with other substances but cannot be changed into a simpler substance by an ordinary chemical process, zinc is classified as

Which of the following sentences best describes table salt?

Which of the following does NOT describe elements?

Air is

Italian dressing is

Which of the following is a compound

How is a mixture different from a compound?

A material is only a mixture if

. A dish is given to you, which contains a blackish-yellow powder. When you move a magnet over it, you are amazed to see black particles, (which you find out are iron) fly upwards and get stuck to the magnet, and all that's left in the dish is a yel

What type of mixture is salad

A solution is always a

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