Answer the following by dragging the right answer to the question!

• about 63

• How many elements were known during Mendeleev's time?

• A set of patterns that applied to all of the elements.

• What year did Mendeleev's table get published?

• 1869

• What did Mendeleev discover?

Match the following questions to the correct answers!

• When observed it changes the chemical identity.

• What is an element?

• Atomic Mass

• Physical Property

• a substance that cannot be broken down into a simpler format.

• What physical property showed patterns when elements were organized by it?

• Can be measured without changing the chemical identity.

• Chemical Property

A(n) ​ (a)   is an arrangement of elements that show ​ (b)   in their properties.

• periodic table
• patterns
• atomic mass
• no similarities

Match the following questions to their answers!

• proton

• Which particle defines what an element is?

• negative

• What is the charge of an electron?

• neutron

• What is the charge of a proton?

• protons & neutrons

• What is the nucleus of an atom composed of?

• positive

• Which part of an atom has no charge?

Tags

NGSS.MS-PS1-1

Match the following questions to the correct answers!

• The number or protons an element has.

• Name

• The average of all the versions (isotopes) of the element.

• Atomic Mass

• 1 or 2 letter abbreviation for the name of the element.

• Chemical symbol

• Element's common name.

• Atomic Number

Tags

NGSS.MS-PS1-1

What is the atomic number of this element?

• 2

• He

• Helium

• 4.0026

Tags

NGSS.MS-PS1-1

What is the atomic mass of this element?

• 10

• Ne

• Neon

• 20.180

What is the chemical symbol of this element?

• 10

• Ne

• Neon

• 20.1797

What is the name of this element?

• 50

• Sn

• Tin

• 118.71

Mendeleev arranged his table in order of increasing atomic number.

• True

• False it should say mass.

• False it should say symbol.