Question

QUESTION 1Choose the response that includes all the items listed below that are pure substances.i. orange juice ii. steam iii. wine iv. oxygen v. vegetable soup.i, iii, vii, ivi, iii, iviv onlyall of the above are pure

Answer 1

1) Pure substance. A pure substance is made of one type of particle.

i. orange juice. Orange juice contains water, sugar, vitamins, potassium, and some other things. So, this is a mixture.

ii. steam. When water passes from liquid to water, it vaporizes. We call this steam. A molecule of water has two hydrogen atoms and one oxygen atom. But all of the molecules are the same. This is a pure substance.

iii. wine. Wine contains water, alcohol, and some other substances that give it its taste and color. This is a mixture.

iv. oxygen. Oxygen is made up of diatomic molecules. All of them are composed of two oxygen atoms. This is a pure substance.

v. vegetable soup. A vegetable soup contains several types of vegetables, water, salt, and pepper. This is a pure substance.

According to the information above ii and iv are pure substances.