Compounds, mixtures, molecules , elements 15 qs

Is NaCl an Element or Compound?

• Yes, it is a compound because it has two or more elements!

• No, it is an element

• Not Sure

• Yes, a compound with four elements!

Answer explanation

An element has only one capital letter and sometimes a lowercase letter with it (Fe) and a compound has TWO or more CAPITAL letters!

Is He an Element or Compound?

• A compound because it has two or more elements!

• It is an element because it has only ONE capital letter.

• Not Sure

• Yes, a compound it has four elements!

Answer explanation

An element has only one capital letter and sometimes a lowercase letter with it (Fe) and a compound has TWO or more CAPITAL letters!

A compound has two or more elements________ bonded.

• Well

• Chemically

• Not

• Seperated

Is Cu4 an Element or Compound?

• Yes, it is a compound because it has two or more elements!

• It is an element!

• Not Sure

• Yes, a compound with four elements!

Answer explanation

An element has only one capital letter and sometimes a lowercase letter with it (Fe) and a compound has TWO or more CAPITAL letters!

What is the difference between Co and CO?

• CO is an element but Co is a compound

• Nothing is different. They are the same thing.

• CO is two elements and Co is only one element

• Co is not a pure substance

How many different elements are in the compound?

• 12

• 3

• 24

• 6

How many elements are in this compound?

• 13

• 6

• 4

• 3

One way to tell how many elements a compound has is to..

• the the square root of the total number of lettersThis is a wrong answer the the square root of the total number of letters

• count the capital letters

• add up all the numbers

• count the letters

Provided is a list of five different substances.

NaOH     Cu    H2O     N2    H2

How many of these substances are elements?

• 2

• 3

• 4

• 5

A molecule composed of only one kind of atom.

• An element

• The valence shell

• Covalent Bond

• The nucleus of an atom