The "F" Word
(Forces silly!)
(Forces silly!)
What's the Matter?
Measurement/Scientific Method
We Have Good Chemistry
Grab Bag
100
A car stops suddenly but the people keep moving forward. Which of Newton's Laws does this describe?
A. 1st Law
B. 2nd Law
C. 3rd Law
1st Law
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
potential energy depends on the ________ and ________ of the object.
mass and height
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
A hammer is an example of what simple machine?
wedge
300
lever
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
The teacher pushes a heavy desk across the floor and she can feel a force that is resisting the motion of the desk. What is this force?
a) gravity between the desk and the floor
b) gravity between the desk and Earth
c) friction between her hands and the desk
d) friction between the desk and the floor
d) friction between the desk and floor
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
b
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
There are ______________ grams in a kilogram.
a) 100
b) 10
c) 0.10
d) 1,000
1,000
500
Car D
500
Before and after a chemical reaction occurs, the number of atoms _________.
a) stays the same b) decreases
c) increases d) none of the above
a) stays the same
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