Describing Matter
Anything that has mass and takes up space is called
All elements are made of basic particles called_____.
Atoms
How do you find the volume of a rectangular object?
length x width x height
Give an example of a physical change.
Folding paper, dissolving sugar or salt, melting butter, breaking something, crushing something, chopping something.... etc..
The SI unit for mass is
kilogram (or gram)
How do liquid water, ice, and water vapor differ from each other?
They are different states of matter.
H2O, CO2, and NH3 are all examples of chemical__________ .
formulas
How do you find the volume of an irregular object?
submerge the object in water in a graduated cylinder
One example of a chemical change is
-crushing a can
-boiling water
-burning wood
-filtering a mixture
burning wood
If you describe methane as a gas that easily catches fire, you are describing a
chemical or physical property?
chemical
The smallest particle of an element is called a/an____
atom
What holds atoms together in a molecule?
chemical bond
How do you find density?
Mass divided by Volume
When Fireworks explode in the sky and give off light/heat, is that which of the following change?
endothermic, exothermic, physical, or no change
exothermic
What is the ratio of hydrogen atoms to sulfur atoms in sulfuric acid, H2SO4?
2 to 1
What is the study of matter and how matter changes?
chemistry
Soil, a salad, and sugar water are all examples of
mixtures
If a brick's mass is 80 kg and has a volume of 20 cm3. What is it's density?
4 kg/cm3
The ability to do work or cause change describes
energy
In the laboratory, volumes of liquid are usually measured in a/an
graduated cylinder
When fuel burns, CO2 and what else is released?
water, H2O, or water vapors
Table salt and water are examples of
-atoms
-mixtures
-substances
-elements
substances
The amount of matter in an object is a measure of it's_________.
mass
The change in which ice absorbs energy and melts is
an endothermic change
What is the mass of a sample of a substance with the volume of 200 mL and a density of 5g/mL?
1,000 g or 1 kg.