Elements/Compounds and physical and chemical change

Front

Which of the following is not a compound? HCl, Cl, NaCl, CO2

Back

Cl

Front

Which of the following represents an element? H₂O, H₂, NaCl, CaCO₃

Back

H₂

Front

Which of the following could be a symbol on the periodic table of elements? JZ, jz, Jz, JZa

Back

Jz

Front

Salt water boils and the water completely evaporates, what is left in the bottom of the beaker?

Back

Compound

Front

What cannot be broken down into other substances? Options: Compound, Mixture, Solids, Element

Back

Element

Front

What is made up of two or more elements that are chemically combined?

Back

Compound

Front

Which of the following is an element? Carbonic Acid, Copper, Iron and Copper, Water

Back

Copper

Front

Back

1

Front

Back

2

Front

How many elements are represented in the compound? Na₂CO₃

Back

3