Anything that has mass and takes up space
What is matter?
Can the thermal energy from ice cream transfer to a spoon that is room temperature? Explain.
No; thermal energy can only transfer from a warmer substance to a cooler substance.
Write the chemical equation for the following chemical change:
Methane burns (uses oxygen) ---> two new substances (Hint: two new substances are 2 waters and Carbon dioxide)
CH4 + 2O2 -------> CO2 + 2H2O
The force that has an effect on weight.
What is gravity?
What happens during an endothermic change?
energy is absorbed.
2 or more atoms bonded together, such as O2 and H2O.
What is a molecule?
The formula for density.
What is density = mass / volume?
Type of change when you melt an ice cube.
What is a physical change?
Type of property when you test flammability.
What is a chemical property?
Type of energy when our bodies break down sugar.
What is chemical energy?
If a woodchuck could chuck wood, what kind of change would it be for the wood that the woodchuck is chucking?
physical change
The force that holds two atoms together.
What is a chemical bond?
What is the temperature where water starts to lose density?
4 degrees Celsius
What type of change is sublimation?
physical change
A single kind of matter that is pure and has a specific set of properties.
What is a pure substance?
What is a unit for density? Two possible answers
What is g/mL or g/cm3?
The most common type of energy released or absorbed when matter changes.
What is thermal energy?
Law that states that matter cannot be created or destroyed.
What is the law of conservation of matter?
What is the unit of measurement for force on a spring scale ?
newtons
When you are cooling off your cupcakes, does (A) the warmth of the cupcakes warm up the counter, or (B) do the cool counters cool off the cupcakes?
(A) the warmth of the cupcakes warm up the counter
Thermal energy moves from _______ to ________
What is warmer to cooler
How is a hydrogen molecule different than hydrogen
chlorine or ammonia?
Hydrogen is a molecule, not a compound.