Solids, Liquids, and Gases
A brick is a ...
Solid
Chemical or physical? An acid corroding a piece of metal
Chemical
Which substance is heterogenous? Chicken soup/ Tomato Soup
Chicken Soup
What is the "base" in the metric system?
10
The amount of mass that fits in a certain amount of space.
Ketchup is a ...
Liquid (No arguing)
Which of these is the physical change?
A banana turns brown OR peeling a banana
Peeling a banana.
What is an element?
A pure substance made up of one type of atom
How many significant figures in this number? 42.38076
7
What is the equation for density?
d=m/v
In a solid, how are the molecules arranged
Locked in a crystal structure
Physical
What's the difference between an element and a compound?
A compound is made of molecules made of multiple types of atoms.
Convert .073 Megagrams to centigrams
7300000
What is the mass of 15.3L of pure water? (Remember water's density=1. Units!
15.3 kg
What is the difference between the molecule's movement in a liquid and a gas?
In a gas, the molecules are moving around much faster.
What characterizes a physical change?
A change in form, shape, or appearance with out a change in composition
Element, compound, or mixture? Vegetable Oil
Compound
Answer with the correct number of sig figs.
12.6 x 147.3
1860
A block of unknown metal has mass = 65.3 kg and has volume = .720 L. What is its density?
90.7 kg/L
Match Solid Liquid and Gas with the description:
Definite Volume, Indefinite Shape
Definite Volume, Definite Shape
Indefinite Volume, Indefinite Shape
Def Volume, Indef Shape = Liquid
Def Volume, Def Shape = Solid
Indef Volume, Indef Shape = Gas
What characterizes a chemical change
A rearrangement of atoms within the molecule.
Element, compound, or mixture? Sleet
Compound
A very boring room has the dimensions: 12.00m x 1005.53 mm x .0476 km? What is its volume. Remember sig figs!
574 m3
You have 15.00 kg of platinum (density= 21.45 g/mL). What is its volume (mL)?
699.3 L