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Unit 1 Properties of Matter - Review Quiz (8.6A, 8.6B, 8.6C, 8.6D, 8.6E)
Quiz by Grade 8 Science - Texas Education Agency
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A chemical equation is shown.
Which statement correctly compares the number of atoms in the reactant and in the products?
The number of atoms in each molecule of liquid water is equal to the number of atoms in each molecule of oxygen gas.
The number of atoms in each molecule of hydrogen peroxide is equal to the number of atoms in each molecule of oxygen gas.
The total number of atoms in the hydrogen peroxide molecules is equal to the total number of atoms in the liquid water and oxygen gas molecules.
The total number of atoms in the hydrogen peroxide molecules is equal to the total number of atoms in each molecule of liquid water
A chemical equation is shown.
Which statement correctly compares the number of atoms in the reactant and in the products?
Which statement describes an action that most likely resulted in a chemical reaction?
Which of these observations is an indication that a chemical reaction has occurred?
Students performed a lab investigation on chemical reactions. The students put on goggles and plastic gloves and then followed these steps.
Which observation would indicate that a chemical reaction occurred?
Which type of matter has a fixed ratio of elements chemically bonded together?
Which of these cannot be broken down into simpler substances by chemical means?
Which of these is a homogeneous mixture?
Which is an example of a heterogeneous mixture?
Which part of the periodic table mostly contains nonmetals that react with metals to form compounds?
Which element is a halogen that reacts with metals to form salts?
Which element in the periodic table is represented by the symbol "K"?
What property of water causes water molecules to stick to each other?
Which property of water allows some insects to walk on its surface?
What property of water explains why it sticks to glass in a graduated cylinder?
Why is adhesion important in capillary action?
Why does a paper towel absorb water?
Which property is typical of acids?
Which household item is an example of a base?
Which of the following is neutral on the pH scale?
Which food contains lactic acid?
