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You can create printable tests and worksheets from these Grade 10 Chemistry questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

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Carbohydrates are made up of the three elements of
1. nitrogen, oxygen, and hydrogen.
2. carbon, hydrogen, and oxygen.
3. sulfur, hydrogen, and oxygen.
4. nitrogen, phosphorus, and oxygen.
Grade 10 Periodic Table and Elements
The atomic number of an atom is always equal to
1. the number of neutrons
2. the number of electrons
3. the number of protons
4. the number of protons plus neutrons
To balance a chemical equation, you may adjust the
1. coefficients.
2. subscripts.
3. formulas of the product.
4. either of coefficients or subscripts.
Grade 10 Periodic Table and Elements
The alkaline earth metal in period 5 is
2. Niobium
3. Rubidium
4. Strontium
Which macromolecule holds genetic information?
1. nucleic acids
2. carbohydrates
3. lipids
4. proteins
What is the correct name for the compound $MgO$?
1. magnesium trioxide
2. dimagnesium trioxide
3. magnesium oxide
4. magnesium oxygen
A carbohydrate is an organic compound because it contains
1. phosphorus.
2. carbon.
3. hydrogen.
4. oxygen.
Which of the following atoms has the fewest electrons?
1. ${::}_53^127I$
2. ${::}_52^128Te$
3. ${::}_51^123Sb$
4. ${::}_50^121Sn$
Grade 10 Quantum Physics and the Atom

This question is a part of a group with common instructions. View group »

Which of the following represents a correct ground-state electron configuration for a silicon atom?
1. $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$
2. $1s^2 2s^2 2p^4 3s^2 3p^4$
3. $1s^2 2s^2 2p^6 3s^2 3p^2$
The color of a substance is called a                  .
1. physical property
2. chemical property
3. physical change
4. chemical change

This question is a part of a group with common instructions. View group »

In a famous experiment conducted by Ernest Rutherford, positively charged alpha particles were scattered by a thin gold foil. Which of the following is a conclusion that resulted from this experiment?
1. The nucleus is negatively charged.
2. The atom is a dense solid and is indivisible.
3. The mass is conserved when atoms react chemically.
4. The nucleus is very small and the atom is mostly empty space.
2. $NAD^+$.