Etwinning Project: ,,My Chemical Elements"

Question 1 of 9

1

One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?

Select one of the following:

1 kilogram
500 grams
practically none
250 grams

Explanation

Question 2 of 9

1

You can't live without water! What is its chemical formula?

Select one or more of the following:

H2
H2O2
H2O
O2

Explanation

Question 3 of 9

1

Noble gases are inert because they have completed outer electron shells. Which of these elements isn't a noble gas?

Select one or more of the following:

Helium
Krypton
Chlorine
Argon

Explanation

Question 4 of 9

1

What do you call an atom that has more protons than electrons?

Select one or more of the following:

a molecule
a cation
an anion
an isotope

Explanation

Question 5 of 9

1

Who is credited with the invention of the modern periodic table?

Select one or more of the following:

Nobel
Mendeleev
Mendel
Lavoisier

Explanation

Question 6 of 9

1

Which of these elements is a nonmetal?

Select one or more of the following:

Sulfur
Beryllium
Manganese
Aluminum

Explanation

Question 7 of 9

1

Three of the most common states of matter are solids, liquids, and gases. A liquid has:

Select one or more of the following:

no defined volume or shape
a defined volume, but not a defined shape
a definite shape, but no defined volume
a definite volume and shape

Explanation

Question 8 of 9

1

. All of the following elements are liquids around room temperature except which one?

Select one or more of the following:

Gallium
Mercury
Bromine
Magnesium

Explanation

Question 9 of 9

1

A mole contains Avogadro's number of items. What is Avogadro's number?

Select one or more of the following:

6023
83 x 10^
6.02 x 10^-23
6.023 x 10^23

	Created by IRINA SOSELIA about 6 years ago

Quiz on Etwinning Project: ,,My Chemical Elements", created by IRINA SOSELIA on 28/11/2018.

Etwinning Project: ,,My Chemical Elements"

Question 1 of 9

One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?

Select one of the following:

Explanation

Question 2 of 9

You can't live without water! What is its chemical formula?

Select one or more of the following:

Explanation

Question 3 of 9

Noble gases are inert because they have completed outer electron shells. Which of these elements isn't a noble gas?

Select one or more of the following:

Explanation

Question 4 of 9

What do you call an atom that has more protons than electrons?

Select one or more of the following:

Explanation

Question 5 of 9

Who is credited with the invention of the modern periodic table?

Select one or more of the following:

Explanation

Question 6 of 9

Which of these elements is a nonmetal?

Select one or more of the following:

Explanation

Question 7 of 9

Three of the most common states of matter are solids, liquids, and gases. A liquid has:

Select one or more of the following:

Explanation

Question 8 of 9

. All of the following elements are liquids around room temperature except which one?

Select one or more of the following:

Explanation

Question 9 of 9

A mole contains Avogadro's number of items. What is Avogadro's number?

Select one or more of the following:

Explanation