Metals, Nonmetals, Metalloids | Physical and Chemical changes | Periodic Table | Elements, Compounds, Mixtures | MIxed Questions |
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What is the name of the line in the periodic table called that divides both metals and nonmetals?
Stair step line
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When two or more substances combine, they...
a) form a mixture b) form a new substance with properties that differ from those of the original substances. c) become elements d) form a new substance that ha the same properties as the original substances.
b) form a new substance with properties that differ from those of the original substances.
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Name the three types of elements.
a) solid, liquid, gas b)compound, mixture, solution c) metals, nonmetals, metalloids d) calcium, hydrogen, oxygen
c) Metals, Nonmetals, Metalloids
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Which of the following is an element?
a) H2O b) beryllium c) Water d) NO
b) berrylium
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Which force keeps the Moon in orbit around the Earth?
a) gravity between Earth and the Moon b) gravity between Earth and Mars c) gravity between Earth and the Sun d) gravity between Mars and Venus
a) gravity between the earth and the Moon
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Which property is a characteristic of many nonmetals and few metals?
a) shininess b) brittleness c) ability to conduct electricity d) ability to be flattened into sheets
b) brittleness
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Which of the following is a physical change?
a) baking a cake b) cooking an egg c) freezing water d) burning wood
c) freezing water
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What is the chemical symbol for calcium.
Ca
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Which of these is a product of photosynthesis?
a) nitrogen b) carbon c) oxygen d) chlorine
c) oxygen
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A what is a compound of two or more different elements that mix together evenly?
a) mixture b) solution c) compound d) element
b) solution
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Iron, copper, an mercury are metals. Which is not a property of metals?
a) they are dull b) they conduct heat c) they conduct electricity d) they can be formed into shapes
a) they are dull
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Which of the following is a chemical change?
a) adding food coloring to water b) fireworks c) ice cream melted d) adding tea to water.
b) fireworks
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Which of the following is the chemical formula for water?
a) H20 b) O2 c) HO d) CO
a) H2O
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Which of these is a compound found in the air?
a) O2 b) N2 c) NH3 d) H2O
d) H2O
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When the metal iron combines chemically with oxygen gas, a new solid substance is formed. What is the substance?
a) water b) rust c) table salt d) table sugar
b) rust
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Give an example of a metalloid.
Boron
Arsenic Antimony Tellurium Polonium Silicon Germanium |
Is a chemical change reversible or irreversible?
Irreversible
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What is the chemical formula for salt?
NaCl
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Which of the following represents a substance that consists of two different types of atoms?
a) Cu b) Cs c) CO d) Co
c) CO
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A teacher demonstrates the orbit of a planet around the Sun using a yo-yo on a string. She swings the yo-yo around in a circle so that the string is taut. She explains that the yo-yo is a planet and her hand is the Sun. The path of the yo-yo is its orbit.
b) gravity
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A frying pan has a metal bottom and nonmetal handle. Why are these two materials safe choices for use in the different parts of the pan?
a) metals tend to be reactive, while nonmetals are inert. b) metals tend to be solids, while nonmetals tend to be gase
c) metals tend to conduct heat well, while nonmetals do not.
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Under the right conditions, hydrogen gas and oxygen gas can combine in a chemical reaction. What products could the chemical reaction create?
a) Hydrogen gas b) Oxygen gas c) Hydrogen and oxygen gas d) water
d) water
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About how many natural elements are there?
a) about 50 b) about 100 c) about 150 d) about 200
b) about 100
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Which statement describes the difference between elements and compounds?
a) elements are gases, while compounds are solids b) elements are pure substances, while compounds are mixtures c) elements are made up of atoms, while compounds are made up of mole
d) elements are made up of atoms, while compounds are made up of molecules
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A scientist analyzes the particles that make up a substance. Each particle is composed of two different kinds of atoms bonded together. Which is a valid conclusion the scientist can draw?
a) the substance is a compound b) the substance is an element c) th
a) the substance is a compound
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