What Are Physical Properties?
What are the four states of matter?
There are four states of matter: solid, liquid, gas, and plasma.
What is the change of state when a solid changes directly into a gas?
Sublimation is the change of state when a solid changes directly into a gas.
Flammability is a ____________ (chemical or physical) property of a substance.
Flammability is a chemical property of a substance.
What is something that increases the rate of a chemical reaction?
catalyst
How could you lower/depress the freezing point of water?
You can add a substance like salt to depress the freezing point of water.
This will actually lower it to about −21 °C (−6 °F)!
Particles are spread farther apart and move faster in a _________ than in a ___________.
Particles are spread farther apart and move faster in a gas than in a liquid.
When there is an increase in temperatures, the particles in a solid move ____________(faster/slower) and begin to ________________________.
When there is an increase in temperatures, the particles in a solid move faster and begin to slide over each other.
What is/are the reactant/reactants in the following equation to describe the rusting of iron?:
iron + oxygen ➞ iron oxide
What is/are the reactant/reactants in the following equation to describe the rusting of iron::
iron + oxygen ➞ iron oxide
This is a chemical reaction that absorbs energy.
Endothermic reaction
How could you calculate the volume of an object using water and a bowl?
I could calculate the volume of an object by measuring the amount of water that it displaces in a bowl.
A spring scale can be used to measure the _________ of an object.
A spring scale can be used to measure the weight of an object.
At 0 degrees Celcius (32 degrees Fahrenheit) water __________________.
At 0 degrees Celcius (32 degrees Fahrenheit) water melts AND freezes.
What is/are the product/products in the following equation to describe the rusting of iron?:
iron + oxygen ➞ iron oxide
What is/are the product/products in the following equation to describe the rusting of iron?:
iron + oxygen ➞ iron oxide
This is a chemical reaction that releases energy.
Exothermic reaction
How could you protect wood building materials from undergoing a chemical change to stop any chemical reactions from occurring?
I could treat the wood with a sealant to protect it from water and oxygen. I could also paint the wood. This would also protect the wood from the elements and stop any chemical reactions from occurring.
Solid objects have _______ (indefinite/definite) size and shape. Their particles are_______________________________________________________
Solid objects have definite size and shape. Their particles are tightly packed together and vibrate back and forth.
What is the word that describes the change of state from a gas directly to a solid?
The change of state from a gas directly to a solid is known as deposition.
What is/are the product/products in the following equation?:
magnesium + oxygen ➞ magnesium oxide
What is/are the product/products in the following equation?:
magnesium + oxygen ➞ magnesium oxide
How do you know that a chemical change is occurring when you place an antacid tablet in a cup of water?
We can see that gas bubbles are released.
When mass is measured, we are measuring the ___________________________.
When mass is measured, we are measuring the amount of matter in an object.
What types of properties are the following?
Size, shape, color, texture, mass, volume, and density
Common physical properties include: size, shape, color, texture, mass, volume, and density.
What is/are the reactant/reactants in the following equation?:
magnesium + oxygen ➞ magnesium oxide
What is/are the reactant/reactants in the following equation?:
magnesium + oxygen ➞ magnesium oxide
When we see color changes, changes in smell, production of gases, production of solids, or changes in energy (temperature) this can tell us that what has taken place?
A chemical reaction has taken place
What is the equation we use to calculate density?