atoms
chemical change and physical change
chemical reactions and physical reaction
periodic table
elements
100

what is the definition of atoms

the basic unit of a chemical element.

100

Is a bike rusting Chemical or Physical

chemical

100

is breaking glass a physical or chemical reaction

physical

100

how many metalloids are on the periodic table?

6 metalloids

100

what does B+H make?

BH2

200

what does Bh stand for?

Bohrium

200

is digesting food Physical or Chemical

chemical

200

is boiling water a physical or chemical reaction?

physical reaction

200

what is the hottest metal on the periodic table

tungsten

200

what does H+O make?

H2O

300

what does Hs stand for?

Hassium

300

Is burning a marshmallow Chemical or Physical?

chemical change

300

is photosynthesis a chemical reaction or a physical reaction?

chemical reaction

300

How many elements are on the periodic table?

118

300

what does N+O make?

nitric oxide

400

what does Np stand for?

Neptunium

400

Is a log rotting Chemical or Physical?

chemical change

400

is digesting food a chemical reaction or a physical reaction?

chemical reaction

400

how many nonmetals are on the periodic table

17 nonmetals

400

what does F+O make?

O2F2

500

What does Db stand for?

dubnium

500

is a tree growing Chemical or Physical?

physical

500

What are signs of a chemical reaction?

  • Color Change.
  • Production of an odor.
  • Change of Temperature.
  • Evolution of a gas (formation of bubbles)
  • Precipitate (formation of a solid)
500

what is the hottest metal on the periodic table

tungsten

500

what does H+O make?

heliox

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