From the publisher's website:

In Exploring the Building Blocks of Science Book 7, students advance their knowledge of the 5 core scientific disciplines of chemistry, biology, physics, geology, and astronomy. Some high school level science is introduced in this text. Topics covered include: pure substances and mixtures, solutions, separating mixtures, organic chemistry (the chemistry of carbon), polymers, biological polymers including amino acids, DNA, and RNA; plant cells and the classification of plants, the chemistry of photosynthesis, plant structure and growth, plant reproduction; chemical energy, electrostatics, electrodynamics, and electromagnetics; Earth as a system and Earth's hydrosphere, biosphere, and magnetosphere; different types of galaxies, the Milky Way, red giants, white dwarfs, and other objects in space. This full-color text presents scientific facts in a clearly written, easily understood manner, and the beautiful illustrations and photographs reinforce the concepts presented. 22 chapters.