Types, Properties, and Structure of Matter

A student describes a substance as lacking a definite shape. The description also states that the particles of matter are close to each other but still able to flow past each other. Which type of substance is the student MOST likely describing?

• Solid

• Liquid

• Mixture

• Compound

The light and dark circles in the pictures below represent different types of atoms. Which picture BEST represents a pure compound?

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• 
• 
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An ice cube melts on a hot summer day because the energy of the particles

• 1. Decreases over a period of time and is lost

• Increases and the particles move apart

• 1. Causes them to lock together

• Is converted into potential energy

An experiment was conducted using rods made of different materials. A drop of wax was placed on each of the rods. The rod was then placed in the flame of a candle. The time it took for the wax to melt was recorded in the table. Which list shows the correct order of the substances from MOST to LEAST efficient at conducting heat?

• Glass, aluminum, iron, copper

• Copper, aluminum, iron, glass

• Copper, iron, aluminum, glass

• Aluminum, copper, glass, iron

Which of the following is represented by the Bohr Model?

• Sodium

• Neon

• Potassium

• Aluminum

If this Bohr model had an atomic mass of 20, how many neutrons would be in its nucleus?

• 20

• 9

• 11

• 10

The following is a warning label found on a container. Which of the properties listed would be considered a chemical property of the liquid in the container?

• red color

• combustible

• transparent

• freezing point

Which of the following is a chemical property of a substance?

• Mass Of 372 g

• Density of 37g/cm3

• 1. Reacts with HCL

• 1. White powder with silver specks

The Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?

• Element

• Atom

• Electron

• Molecule

Which element is has 4 energy levels and 4 valence electrons?

• Be

• Sc

• Ge

• O