Chemistry Final Review S1

What happens when you change the number of protons in an atom?

• You create an isotope

• You create an ion

• You create a different element

What happens when you change the number of electrons in an atom?

• You create an isotope

• You create an ion

• You create a different element

What happens when you change the number of neutrons in an atom?

• You create an isotope

• You create an ion

• You create a different element

Why does it matter if you change the number of neutrons in an atom?

Answer explanation

If you change the number of neutrons then the mass will change and the atom will behave differently than before

When you add an electron what happens to a neutral atom?

• It becomes a positive ion

• It becomes a negative ion

• It becomes an anion

• It becomes a cation

Which of these are elements?

• Water

• Oxygen

• Salt

• Ammonium

• Carbon dioxide

What's the best way to separate salt from sand?

• Decanting

• Filtering

• Distilling

• Magnetizing

Which are examples of chemical change?

• Baking an egg

• Letting a soda go flat

• Cutting a banna

• Lighting a candle

What is the basic unit of mass in the metric system?

• Liter

• Meter

• Gram

• Kilometer

Tags

CCSS.3.MD.A.2

Matter can not be created nor destroyed: it can only be

• Destroyed a little bit
• Invisible
• Transformed, changed
• None of the above

Tags

NGSS.HS-PS1-7