Unit 1
Atoms of which two elements have a combined total of 23 protons?
What Is Sodium, Na, and magnesium, Mg?
Which statement best describes evidence that a chemical reaction occurs as a cake bakes?
What is The cake rises as gas bubbles form in the baking cake?
The net force on a vehicle that is accelerating at a rate of 1.5 m/s2 is 1,800 newtons. What is the mass of the vehicle to the nearest kilogram?
what is 1200 kg?
Cold front
what is A cold weather front is a boundary between a cold air mass and a warmer air mass?
A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material?
What is the material malleable or ductile?
A compound secreted by honeybees to paralyze intruders in their hive is known as heptanone. The formula for this compound is shown.
CH3 C4 H8 COCH3
What is 7 carbon atoms, 14 hydrogen atoms, and 1 oxygen atom?
A car is going east and turns to the north while maintaining the same speed.
What is Velocity?
Warm Front
What is A warm weather front is a region where a warm air mass is replacing a cold air mass?
Ape and Man
what is?
a- Atomic number m- Mass Number
p- Protons a- Atomic Number
e- Electrons n- Neutrons
Example of physical change
what is cracking a egg?
A child on a bike stopped to talk to a friend before pedaling off to go home.
what is Acceleration?
Stationary Front
What is A stationary front is where a warm air mass and a cold air mass meet, but neither has enough force to move the other?
Atomic Number
What is the number of a chemical element in the periodic system?
example of chemical change
What is baking a cake?
A blue whale swims 4mi/hr
What is Speed?
Occluded Front
What is Occluded fronts happen when two cold air masses trap a warm air mass and force it upward?