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Science test 💀💀💀

7th grade test

QuestionAnswer
Water boiling Physical or chemical change? Physical
Iron rusting? Physical or chemical change? Chemical
Baking cookies?🍪 Physical or chemical? Chemical
Cutting paper 📑 Physical or chemical? Physical
What is an element? One type of atom
Compound 2 or more elements chemically bonded
Mixture Subtended mixed, not bonded
H2O Compound
NaCL Compound
Lucky charms Mixture
Fe +S Mixture
Hg Element
What is matter? Anything that has mass and takes up space
What is an atom? The smallest unit of matter
What are the three parts of an atom? Protons neutrons and electrons
What charge does a proton have? Positive +
What charge does a newton have? No charge
What charge does an electron have? Negative -
What is a homogeneous mixture? A mixture that is evenly mixed
Example of a homogeneous mixture Salt water
What is a heterogeneous mixture A mixture that is NOT evenly mixed
Example of a heterogeneous mixture Lucky Charms cereal
What is a physical change? A change where an ew substance is not made
What is a chemical change A change where a new substance is made
Is boiling water a physical or chemical change Physical
Created by: user-2015779
 

 



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