GRADE 8 | 3Q: MATTER

Fe2+ and Fe3+ are different iron _____

• atoms

• ions

• isotopes

• elements

Group IIIA/13 in the periodic table have a name called

• boron group

• carbon group

• nitrogen group

• halogens

Crushing of block of ice is an evidence of _________ change.

• endothermic

• exothermic

• physical

• chemical

¹⁴₆ C has how many protons?

• 14

• 12

• 20

• 6

Based on the picture below, the letter X symbolizes...

• atomic mass

• atomic number

• atomic size

• element name

He is the one who published the first ever Periodic Table

• dmitri Ivanovich Mendeleev

• henry moseley

• johann wolfgang dobereiner

• john alexander reina newlands

The negatively charged particle in an atom is called

• protons

• electrons

• neutrons

• nucleus