Unit 1
Convert: 2.3 cm to meters
.023 meters
Balanced forces are equal in size and _________ in direction
Opposite
Physical
What does the atomic number tell you about an atom?
The Number of Protons
Convert 300 kl to liters
.3 liters
What unit is used to measure force?
Newtons
What is the transition from a liquid to a solid called?
melting
What is the charge of a proton?
Positive
You use different types of toothpaste to see which gets your teeth the cleanest. What is the independent variable?
Type of Toothpaste
Which of the following is the best example of velocity?8.6 m
8.6 m/s
8.6 m/s south
9.6 m/s south
What happens to the temperature of an object as it's energy increases?
Temperature increases
If an atom has a neutral charge, what is the number of electrons the same as?
Number of Protons
You use different types of toothpaste to see which gets your teeth the cleanest. What is the independent variable?
Clean Teeth
Carla rode her bicycle in a 600 km race heading north toward the finish line. It took her 4 hours to complete the race. What was her average velocity? Velocity = Distance/Time, v=d/t
150 km per hour north
In which state of matter are the particles closest together?
Solid
Which of these groups is more reactive?
Alkali Metals or Noble Gases
Noble Gases
True or False: you should do research before forming a hypothesis.
True
A net force of 15 N causes a shopping cart to accelerate at a rate of 5 m/sec². According to Newton's Second Law of Motion, F=ma, what is the mass of the moving cart?
3 kg
Which of the 4 states of matter has the most energy
Plasma
How many Neutrons does Carbon have if it has a mass of 12?
6