Matter
To measure the height of a door, what measurement would be most appropriate to use?
meter
What is the Law of Conservation of Mass?
mass of products is equal to the mass of the reactants
Work is force times what?
distance
A boy pulls on a rope with 15N and a girl pulls on the same rope at the same time with a force of 19N. Who will win the tug of war?
the girl
When looking through a glass filled with water and a pencil in the water, the pencil looks bent. What is causing the pencil to look bent.
Refracting of light
What units are used to measure the density of a solid?
grams per cubic centimeter
How are elements in the same family alike?
act the same, have similar properties
What happens when light strikes a white object?
all rays reflected back
Speed equals distance divided by what?
time
Complete the phrase: "For every action force there is an..."
equal and opposite reaction force
Matter changes from liquid to solid, what phase is that?
freezing
Most reactive elements are found in which two groups?
groups 1 and 17
Waves cause a medium to do what?
vibrate
A horizontal line on a distance-time graph means that an object is ...
not moving
What force must an object overcome to move an object up?
gravity
What is the dependent variable?
When you balance a chemical equation, what is the only thing you add?
coefficients
The total energy of the particles in an object is what type of energy?
A couple is walking down the hall at the same speed and in the same direction. How are they moving in relation to each other?
they are not moving
A changing pitch of a car horn is because of what?
the Doppler Effect
What is a control in an experiment?
something that you refer back to, or a variable that stays the same
What does a Lewis Dot structure show?
valence electrons of an atom
How does heat transfer?
from hot to cold
A 100g cart is being pushed. If the load is now 50g and the force is the same as the force pushing the 100g cart, how will that affect the cart's speed?
it will move faster
During a phase change, what happens to the temperature?
stays the same