Chemistry in Science
40 questions · Answers revealed below each question · Print this set
1.What is the most abundant metal in Earth's crust?
- A. Iron
- B. Copper
- C. Gold
- D. Aluminum
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Aluminum
Did you know? Bauxite ore is its main source.
2.Which chemistry concept is two or more atoms bonded together?
- A. a chemical reaction
- B. a molecule
- C. table salt
- D. a solution
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a molecule
Did you know? Water is a molecule with three atoms.
3.What is the lightest chemical element?
- A. Hydrogen
- B. Oxygen
- C. Lithium
- D. Helium
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Hydrogen
Did you know? Hydrogen makes up most of the Sun.
4.Which chemistry concept has the formula H2O?
- A. water
- B. a polymer
- C. oxidation
- D. a chemical reaction
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water
Did you know? Water's formula is H2O: two hydrogens bond to one oxygen.
5.Which metal is liquid at warm room temperature and used in old thermometers?
- A. Mercury
- B. Zinc
- C. Aluminum
- D. Tin
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Mercury
Did you know? Its toxicity retired it from most thermometers.
6.Which chemical symbol comes from the Latin name aurum?
- A. Au
- B. Ag
- C. Go
- D. Gd
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Au
Did you know? It comes from the Latin name aurum.
7.Which gas do plants absorb for photosynthesis?
- A. Carbon dioxide
- B. Nitrogen
- C. Oxygen
- D. Hydrogen
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Carbon dioxide
Did you know? They release oxygen in return.
8.Which chemistry concept rearranges atoms into new substances?
- A. alloys
- B. radioactivity
- C. a neutron
- D. a chemical reaction
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a chemical reaction
Did you know? Burning is a fast reaction with oxygen.
9.Which element are ozone molecules made of?
- A. Nitrogen
- B. Oxygen
- C. Oganesson
- D. Osmium
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Oxygen
Did you know? Ozone is three oxygen atoms bonded together.
10.Which chemistry concept carries a negative charge and orbits the nucleus?
- A. a polymer
- B. a solution
- C. the periodic table
- D. an electron
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an electron
Did you know? Electron flow is electric current.
11.Which chemical symbol comes from the Latin name ferrum?
- A. Ir
- B. I
- C. F
- D. Fe
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Fe
Did you know? It comes from the Latin name ferrum.
12.Which metal mixtures combine metals for better properties?
- A. table salt
- B. a molecule
- C. alloys
- D. water
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alloys
Did you know? Steel is iron with carbon.
13.Which chemistry concept is a gas we exhale and plants consume?
- A. oxidation
- B. a base
- C. carbon dioxide
- D. alloys
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carbon dioxide
Did you know? Fizzy drinks hold it dissolved.
14.Which chemistry concept organizes all known elements?
- A. an isotope
- B. a neutron
- C. the periodic table
- D. a catalyst
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the periodic table
Did you know? Dmitri Mendeleev published the first widely used version.
15.Which chemistry concept carries a positive charge in the nucleus?
- A. radioactivity
- B. combustion
- C. the periodic table
- D. a proton
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a proton
Did you know? The proton count defines the element.
16.Which chemistry concept is the smallest unit of an element?
- A. a chemical reaction
- B. an atom
- C. a molecule
- D. a catalyst
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an atom
Did you know? Atoms contain protons, neutrons and electrons.
17.Which chemistry concept forms when iron meets oxygen and water?
- A. alloys
- B. rust
- C. radioactivity
- D. pH
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rust
Did you know? Rust is iron oxide.
18.What gas gives soda its fizz?
- A. Nitrogen
- B. Carbon dioxide
- C. Oxygen
- D. Helium
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Carbon dioxide
Did you know? Pressure keeps it dissolved until the bottle opens.
19.What is iron's rust chemically?
- A. Iron sulfide
- B. Pure iron
- C. Iron oxide
- D. Iron carbonate
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Iron oxide
Did you know? Salt spray speeds its spread.
20.What is pure water's pH, roughly?
- A. 9
- B. 7
- C. 1
- D. 5
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7
Did you know? Seven is neutral on the scale.
21.Which chemistry concept is one substance dissolved in another?
- A. an atom
- B. a chemical reaction
- C. a solution
- D. the periodic table
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a solution
Did you know? Salt water is a solution.
22.Which element is a liquid metal at room temperature?
- A. Bromine
- B. Mercury
- C. Lead
- D. Sodium
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Mercury
Did you know? Bromine is liquid too, but it is not a metal.
23.Which chemistry concept donates protons and tastes sour?
- A. alloys
- B. an acid
- C. the noble gases
- D. water
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an acid
Did you know? Lemon juice contains citric acid.
24.Which chemistry concept is loss of electrons in a reaction?
- A. a proton
- B. a solution
- C. oxidation
- D. a polymer
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oxidation
Did you know? Cut apples brown through oxidation.
25.What is added to water supplies to prevent tooth decay?
- A. Iodine
- B. Sodium
- C. Chlorine
- D. Fluoride
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Fluoride
Did you know? Chlorine kills germs instead; fluoride hardens enamel.
26.What is dry ice made of?
- A. Solid methane
- B. Solid nitrogen
- C. Solid carbon dioxide
- D. Solid water crystals
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Solid carbon dioxide
Did you know? It skips the liquid phase as it warms.
27.Which chemistry concept speeds reactions without being consumed?
- A. pH
- B. table salt
- C. a polymer
- D. a catalyst
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a catalyst
Did you know? Enzymes are biological catalysts.
28.What is the most common gas in Mars' thin atmosphere?
- A. Nitrogen
- B. Oxygen
- C. Methane
- D. Carbon dioxide
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Carbon dioxide
Did you know? Its air is less than 1% as thick as ours.
29.What process cleans drinking water by passing it through sand and gravel?
- A. Chlorination
- B. Filtration
- C. Distillation
- D. Evaporation
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Filtration
Did you know? Sand filters trap particles and some microbes.
30.Which chemical elements rarely react with other elements?
- A. the noble gases
- B. alloys
- C. water
- D. a molecule
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the noble gases
Did you know? Helium and neon are among them.
31.Which chemical symbol comes from the Latin name argentum?
- A. Ag
- B. Sr
- C. S
- D. Si
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Ag
Did you know? It comes from the Latin name argentum.
32.Which chemistry concept measures how acidic a solution is?
- A. pH
- B. an isotope
- C. radioactivity
- D. a chemical reaction
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pH
Did you know? Seven is neutral on the pH scale.
33.What does H2O2 mean, chemically?
- A. Hydrogen peroxide
- B. Water
- C. Hydrogen gas
- D. Heavy water
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Hydrogen peroxide
Did you know? It is water with one extra oxygen atom.
34.Which chemical symbol comes from the Latin name kalium?
- A. Pt
- B. Po
- C. K
- D. P
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K
Did you know? It comes from the Latin name kalium.
35.Which chemistry concept is the decay of unstable nuclei?
- A. a catalyst
- B. a mixture
- C. radioactivity
- D. table salt
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radioactivity
Did you know? Geiger counters detect it.
36.Which chemistry concept separates liquids by boiling points?
- A. distillation
- B. combustion
- C. table salt
- D. an isotope
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distillation
Did you know? Distilled water has left its minerals behind.
37.Which chemistry concept has the formula NaCl?
- A. alloys
- B. table salt
- C. an atom
- D. a polymer
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table salt
Did you know? Table salt is sodium chloride.
38.Which chemistry concept has no charge and adds mass to the nucleus?
- A. distillation
- B. a neutron
- C. a base
- D. alloys
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a neutron
Did you know? Isotopes differ in neutron count.
39.Which chemistry concept accepts protons and feels slippery?
- A. an electron
- B. an isotope
- C. a mixture
- D. a base
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a base
Did you know? Soap is mildly basic.
40.Which everyday item is calcium carbonate?
- A. Chalk
- B. Baking soda
- C. Table salt
- D. Sugar
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Chalk
Did you know? Seashells are made of it too.
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