Random
What's the Matter?
Measurement/Scientific Method
We Have Good Chemistry
Grab Bag
100
When balanced/unbalanced forces act on an object, the forces will move.
unbalanced
100
The smallest piece of matter that still has the properties of an element
is a(n)___________.
a) molecule b) atom c)electron
b) atom
100
In an experiment, all the things that must remain the same are called the ____.
a) procedures b) constants
c) observations d) independent variable
constants
100
The smallest piece of matter that still has the properties of an element
is a(n)___________.
a) molecule b) atom c)electron
b) atom
100
Which is an example of a physical change?
a) cutting paper in half
b) metal rusting
c) paper burning
a) cutting paper in half
200
What is the formula for finding volume of a regular solid?
v = l x w x h
200
Which particles have a higher average kinetic energy?
a) hot coffee b) iced coffee
c) they have the same
a) hot coffee
200
Calculate the density of an object that has a mass of 100g and a volume of 5 cm3.
a) 0.05 g/cm3 b) 200.0 g/cm3
c) 500.0 g/cm3 d) 20.0 g/cm3
d) 20.0g/cm3
density = mass/volume
200
Which substance has a definite shape and definite volume?
a) liquid b) plasma c) gas d) solid
d) solid
200
You would use a ________________ to find the mass of an object.
triple beam balance
300
The unit for force is
Newton
300
The best method for separating a solid that dissolved in a liquid (like saltwater) is ____________.
a) chromatography b) sifting
c) magnetism d) evaporation
d
300
Which lab tool is used to find the volume of liquids?
a) metric ruler b) graduated cylinder
c) triple beam balance d) Newton spring scale
b) graduated cylinder
300
12
atomic number = protons
300
11
400
What tool do we measure mass with?
Double points: what unit do we use for mass?
triple beam balance
grams (g)
400
In a solution, the solute and solvent __________________.
a) separate into layers b) chemically combine to make a new substances
c) spread out evenly d) do not mix
c) spread out evenly
400
a. 60mL. b. 65mL c. 63.0mL d. 65.0mL
c. 63.0mL
400
Is Amonia gas a molecule or a compound?
compound
400
Energy from the sun travels to the Earth through
Radiation
500
What is it called when something changes from a liquid to a gas?
evaporation
500
What are the 3 states of matter and an example for each?
solid, liquid, gas
500
The mass of an empty container is 200.0 grams. The mass of the container when filled with water is 450.0 grams. Therefore, the mass of the water must be ____
a) 200.0 g b) 100.0 g
c) 50.0 g d) 250.0g
d) 250.0g
450-200=250
500
Which subatomic particle has a negative charge?
a) proton b) neutron c) electron
c) electron
500
Which is an example of chemical change?
a) water freezes b) wood is cut c) bread is baked d) wire is bent
c) bread is baked