Matter and energy review

What is contained in the nucleus of an atom?

• Protons and neutrons

• Electrons only

• Protons and electrons

• Protons only

What is contained in the area surrounding the nucleus of an atom?

• Protons only

• Electrons only

• Electrons and protons

• Protons and neutrons

What does the atomic number of an atom tell you?

• The number of electrons

• The number of protons

• The number of protons and neutrons

• The number of protons and electrons

A neutral atom of Carbon (C) has an atomic number of 6 and an atomic mass of 12. How many electrons does Carbon have?

• 6

• 12

• 24

• 15

Tags

NGSS.MS-PS1-1

Which of the following determines the identity of an atom?

• Electrons

• Neutrons

• Protons

• It's shape

Which of the following results in a substance NOT transforming into a completely new substance?

• Physical Change

• Physical Property

• Chemical Change

• Chemical Property

Tags

NGSS.MS-PS1-4

What is the main difference between a physical and chemical change?

• Physical changes alter the appearance whereas chemical changes alter the composition of a substance.

• Physical changes describe qualities only observed with a reaction whereas chemical changes describe the appearance of a substance.

• Physical changes describe the appearance of a substance whereas chemical changes describe qualities only observed with a reaction.

• Physical changes alter the composition whereas chemical changes alter the appearance of a substance.

When you eat, stomach acid digests the food and breaks it down so that important nutrients can be absorbed and used for energy. This type of digestion is an example of which of the following?

• Physical Change

• Physical Property

• Chemical Change

• Chemical Property

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is not an example of a chemical change?

• Baking soda reacting with vinegar

• Rotting food

• Metal tarnishing

• Sugar dissolving in water

Tags

NGSS.MS-PS1-2

What does the atomic mass tell you?

• Protons only

• Electrons only

• Protons and neutrons

• Protons and electrons