Matter
What is Matter?
a. Gas
b. Solid
c. Liquid
d. Everything Above
d. Everything Above
When atoms stick together what is the bond called?
Chemical Bond
Which reaction absorbs energy?
a. Endothermic
b. Exothermic
a. Endothermic
Which item does the molecules move fastest?
a. HUH WUT
b. Frozen Ice Cube
c. Water Vapor
d. Liquid water
c. Water Vapor
Is it harder to BREAK or MAKE stronger bonds?
a. BREAK
b. MAKE
a. BREAK
You mix baking soda and vinegar in a cup. The cup feels COLD to touch.
Is this a endothermic reaction or a exothermic reaction?
Endothermic reaction
What causes atoms to move around?
a. Water
b. Energy
c. DNA of the cells
d. THE DOGS DID IT ALL WHO LET THEM OUT
b. Energy
True or false:
When atoms form a chemical bond, they usually become more stable
True
Which reaction releases energy?
a. Endothremic
b. Exothermic
b. Exothermic
Describe the density of particles in each state of matter
In solids, the particles are very compact with a fixed position, defining its shape.
In liquids, the particles have a little more space but are still close together, the position is not fixed, the liquid takes shape of its container.
In gasses, the particles are not close at all and move rapidly and freely, it does not take ANY shape.
What requires energy? Why?
a. Bond making
b. Bond breaking
Bond breaking because it needs to absorb energy to break the bonds.
A campfire gibes off heat and light.
Is burning wood endothermic or exothermic?
Exothermic
At -237.15°C (-459.7°F), molecules are still able to move around.
a. true
b. false
b. false
When hydrogen gas meets oxygen gas, they can react to make water.
Which kind of bond has to be BROKEN first - an H-H bond of an O=O bond?
O=O bond
In an exothermic reaction, which has more energy? Reactants or Products.
What about in an endothermic reaction?
Exothermic: Reactants
Endothermic: Products