Front

What is the smallest unit of an element?

Back

Atom

Front

Which subatomic particle has a negative charge?

Back

Electron

Front

Which of these is a chemical change? Options: D) Breaking glass, C) Burning wood, A) Melting ice, B) Boiling water

Back

Burning wood

Front

What is the chemical symbol for sodium?

Back

Na

Front

pH less than 7 indicates a(n):

Back

Acid

Front

The periodic table is organized by increasing:

Back

Atomic number

Front

Which of the following is a noble gas? Hydrogen, Nitrogen, Helium, Oxygen

Back

Helium

Front

How many electrons does carbon have?

Back

6

Front

Water is a: Mixture, compound, element, solution

Back

compound

Front

pH less than 7 indicates a(n):

Back

Acid