Properties of Matter
Physical and chemical
What are 2 types of properties of matter?
This is the smallest unit of matter.
What is an atom?
When there are changes in shape, texture, temperature, state of matter
What is a physical change?
When a solid goes to a liquid.
What is melting?
When matter is neither created not destroyed.
What is law of conservation of matter?
Malleability, density, solubility, melting and boiling points.
What are examples of physical properties?
Example of an element.
When a new substance has been formed
What is a chemical change?
When a liquid goes to a solid.
What is freezing?
Synthetic substances are beneficial. True or False? And why
True; they benefit society, they come from natural resources, and the chemical and physical properties of a synthetic substance contribute to its function.
When something burns, it is a physical property.
What is false?
Atoms bonded together in a regular structure are called by this name.
What is a molecule?
Formula for density
What is density equals mass divided by volume?
The structure of a gas.
What is spaced out and has no defined shape or volume?
You start a reaction with just 2 iron atoms and 1 oxygen atom
You end with 3 iron atoms and 2 oxygen atoms
Is this a demonstration of the law of conservation of matter?
A burned piece of paper demonstrates what type of change? (physical or chemical)
What is a chemical change?
Example of a molecule
What is salt, water, sugar, etc.
The process when a solid turns directly into a gas, skipping the liquid phase
What is sublimation?
The structure of a liquid.
What is has a defined volume but no defined shape?
A beaker of water was placed in a warm place and thermal energy was added.
Explain how adding thermal energy changed the system.
What is when you add thermal energy to a system the motion of the particles increase, which causes the kinetic energy to increase along with the temperature. The state of matter will go from a liquid to a gas.
Glass breaking and ice melting are examples of what type of change
What is a physical change?
Draw what Magnesium Oxide (MgO) would look like if combined. (Black atoms for Oxygen and White for Magnesium)
Show teacher
When the composition of a mixture is the same throughout whole mixture
What is a homogeneous mixture?
The process going from a gas to a solid.
What is deposition?
A sample of a piece of magnesium before burning has a mass of 10g. After burning it the mass was at 16.6g. Why did the mass increase?
What is, it increased because the magnesium combined with the oxygen after it burned causing the mass to increase.