Question

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chemistry sem 1 review
across

1. something you see with shiny cars
2. type of bond between nonmetals
3. cyanide is formed by this
4. count these to identify an element
5. who you spend most of your time with at home
6. most of the air is made of this gas
7. what increases as you go down and left of the periodic table?
8. your chemistry teachers name
9. something you find in older thermometers

down

1. nonmetal gas that can form up to 2 bonds
2. gold and irons are examples of this
3. the most reactive nonmetal group
4. how atoms attract other electrons
5. elements that dont need anything
6. the main actor in chemical reactions
7. you associate it with plumbing
8. dihydrogen monoxide

Explanation:

Each clue is matched to the correct chemistry term or relevant answer based on standard chemistry knowledge:

1. Across 3: Shiny cars have a metallic finish, so the answer refers to the property of metals.
2. Across 7: Bonds between nonmetals are covalent, where electrons are shared.
3. Across 8: Cyanide forms from a covalent bond between carbon and nitrogen.
4. Across 9: The number of protons (atomic number) identifies an element.
5. Across 12: A common answer for "people you spend home time with" is family (already filled).
6. Across 13: Nitrogen makes up ~78% of Earth's atmosphere.
7. Across 14: Atomic radius increases moving down and left on the periodic table.
8. Across 17: Older thermometers use mercury (Hg).
9. Down 1: Oxygen is a nonmetal gas that forms up to 2 bonds.
10. Down 2: Gold and iron are metals.
11. Down 4: Halogens (group 17) are the most reactive nonmetals.
12. Down 5: Electronegativity measures an atom's attraction for electrons.
13. Down 6: Noble gases are inert and do not react readily.
14. Down 10: Energy is the main driver of chemical reactions.
15. Down 11: Lead is historically used in plumbing.
16. Down 15: Dihydrogen monoxide is the chemical name for water.
17. Down 25: Sodium (already filled) is a group 1 alkali metal.

Answer:

Across:

1. METALLIC
2. COVALENT
3. BONDING
4. PROTONS
5. FAMILIES (filled)
6. NITROGEN
7. ATOMIC RADIUS
8. [Teacher's Name, e.g., SMITH]
9. MERCURY

Down:

1. OXYGEN
2. METALS
3. HALOGENS
4. ELECTRONEGATIVITY
5. NOBLE GASES
6. ENERGY
7. LEAD
8. WATER
9. SODIUM (filled)