Measurements
What does volume measure?
Volume measures the amount of space and object takes up.
What is the formula for measuring volume of a solid?
V = l X W X H
What is the average room temperature in Celsius?
Room temperature is about 20 degrees Celsius.
What word describes whether or not a substance can float?
Buoyancy.
What are two examples of visible chemical change indicators?
Change in color and production of a gas.
What does density measure?
Density is a measure of how compact atoms of a substance are. Density effects how buoyant an object is.
What is the formula for finding the density of a substance?
D = Mass / Volume
What is a base?
A base is any substance with a pH of more than 7.
What word means something that is not see through?
Opaque.
What are two examples of non-visible indicators of a chemical change?
Change in temperature and presence of an odor.
What does mass measure?
Mass measures the amount of matter in a substance.
Mass is measured in grams and can be found using a balance (or triple beam balance).
What is an acid?
An acid is a substance with a pH of less than 7.
What is a suspension?
A suspension is a substances that fixes together at first, but has particles that sink to the bottom once the substance settles.
What is a reactant?
The reactant is the substance/substances that undergo a change.
What is the standard international unit of measurement?
Kelvin.
What is the volume of a solid measured in and how can you find the volume of a solid?
Volume is measured in cubic centimeters and can be found using the volume formula or a graduated cylinder.
What is a neutral pH substance and what is one example of a neutral substance?
A neutral pH is 7 and an example of this pH is water.
What type of change is it when a substance changes states of matter?
Physical Change.
What is a product?
A product is what is formed by a chemical reaction.
What are the boiling and freezing points of water in Celsius and Fahrenheit?
Boiling Point Celsius: 100
Boiling Point Fahrenheit: 212
Freezing Point Celsius: 0
Freezing Point Fahrenheit: 32
A volume of 1 cubic centimeter of water is equal to what volume of water?
One milliliter of water.
What are exothermic and endothermic reactions?
An exothermic reaction releases energy during the reaction and an endothermic reaction absorbs or gains energy during the reaction.
How many states of matter are there, and what are they called?
There are 4 states of matter. Solid, liquid, gas, and plasma.
What is one example of a chemical reaction that you have seen take place?
Examples: Fire burning, rust, elephant toothpaste, baking soda and vinegar, fireworks exploding, ect.