Essential Chemistry

What are the three major subatomic particles?

What is matter?

• Anything that has mass and takes up space (volume)

• Things that make up space

• particles with shape

• elements and compounds

Which of the following correctly represent the 3 main states of matter?

• protons, neutrons and electrons

• solid, liquid and gas

• metals, non-metals and gas

• solid, liquid and metal

Which of the following is NOT a characteristic of solids?

• fixed shape

• particles close together

• particles vibrate in a fixed position

• particles move quickly

Which of the following is NOT a characteristic of a liquid?

• has a fixed shape

• has a fixed volume

• particles close together but can move around a certain amount

• does not have a fixed shape

Which of the following is characteristic of gasses?

• Has a fixed volume

• Particles are far apart and can be compressed

• Low energy

• particles are closely bonded together

Select the two options that best represent a proton

• Positive particle (+1)

• The number of protons always matches the number of neutrons

• Found in the nucleus of an atom

• indicates the atomic mass of an atom

Select 2 options that DO NOT represent neutrons

• Have a positive charge (+1)

• Found in the nucleus of an atom

• Match the atomic number on the periodic table

• Atomic mass - Atomic number = number of neutrons

Select 2 options that are characteristic of electrons

• Found in the nucleus

• Commonly match the number of protons in a stable atom

• Found in the cloud that surrounds the nucleus

• Have no charge

The atomic number of an atom tells us how many ___________ an element has