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What is the formula for Force?
f= ma
An element with 36 protons.
Krypton
What is the group of elements called that change their number of valence electrons called?
Transition Metals
Chemical or Physical Change...
baking cookies
CHEMICAL! ALOMST ALL OF YOU MISSED THAT ON THE TEST
What area of the Atlantic is said to be responsible for the disappearance of ships and aircraft?
Bermuda Triangle
Kinetic energy is the energy of _________.
Motion
What element has a atomic mass of 207.2amu?
Lead
What is the most HIGHLY reactive group of METALS called?
Alkali Metals
Chemical or Physical...
chopping down a tree
physical
What does a heliologist study?
The sun
Finish the phrase... energy can not be ___________ or __________. Only _________________.
created or destroyed, transformed.
What element has 51 neutrons?
Zirconium
What is the HIGHLY reactive group of NONMETALS called?
Halogens
In the following reaction, how many HYDROGEN are there?
2HCl + CuBr2 --> 2HBr + CuCl2
2
In the Amazon river, the dolphins are what color?
pink
What is Newton's 1st Law?
For every action, there is an equal and opposite reaction.
An element that...
1) name does not match the symbol
2) is an alkali metal
3) makes fireworks/fire purple
Potassium (K)
What the name of the group that is unreactive?
Nobel gases
In the following reaction, how many copper are in the reactants?
2HCl + CuBr2 --> 2HBr + CuCl2
1
What joins muscles to bones?
tendons
Describe TWO ways that a gravitational force can become larger.
An element that has no neutrons.
Hydrogen
What is the name of the group that contains 6 elements essential for life called?
nonmetals
The teacher mixes two chemicals together, both clear. Immediately, there is a sizzling sound as a gas is formed. After about 10 minutes, the mixture is black. At the end of the reaction, there is a new chemical created.
List all THREE ways you know a chemical reaction occurred.
1. bubbles/production of a gas
2. color change
3. something new is made
What color is the tip of the Canada lynx's tail?
black