Compound

Question 1

Salt (NaCl), water (H2O), and carbon dioxide (CO2) are examples of which of the following?

Answer 1

compounds

Question 2

A rigid framework of many ions or molecules locked together in a repeating pattern is called a(n) ______ ______.

Answer 2

ionic crystals

Question 3

A change that produces matter with a different composition is called a _____.

Answer 3

chemical change

Question 4

A change that produces matter with a different composition is a ___ change.

Answer 4

chemical

Question 5

When two or more different elements in a fixed proportion chemically combine, they form a(n) ___.

Answer 5

compound

Question 6

Which of the following is NOT a compound?

Answer 6

sulfur - S8

Question 7

Which of the following statements is true?

Answer 7

Compounds are pure substances because they have a fixed composition.

Question 8

If two poisonous compounds are chemically combined, the resulting compound will definitely be harmful.

Answer 8

false

Question 9

A compound can be broken down into simpler materials.

Answer 9

true

Question 10

The compound methane can be broken down into carbon and hydrogen.

Answer 10

true

Question 11

Compounds can be decomposed into simpler substances.

Answer 11

true