5.2 Chemistry
- 801. What are the three main states of matter?
- 802. What are examples of allotropes of carbon?
- 803. What is allotropy?
- 804. What is polymorphism?
- 805. What are endothermic and exothermic phase changes?
- 806. What is sublimation point?
- 807. What is triple point?
- 808. What is a phase diagram?
- 809. What is a phase transition?
- 810. Why is this law important in chemistry?
- 811. Who proposed the Law of Constant Proportion?
- 812. What is the Law of Constant Proportion?
- 813. How does diffusion occur in solids?
- 814. What are some daily-life examples of diffusion?
- 815. What factors influence diffusion?
- 816. How does temperature affect surface tension?
- 817. Why do small insects walk on water?
- 818. What is surface tension?
- 819. What factors affect viscosity?
- 820. Why is honey more viscous than water?
- 821. What is viscosity?
- 822. What is meant by elastic limit?
- 823. What is elasticity?
- 824. What is liquefaction of gases?
- 825. What is critical pressure?
- 826. What is critical temperature?
- 827. Why does water boil at lower temperature on mountains?
- 828. How does pressure affect the boiling point of water?
- 829. What is atmospheric pressure?
- 830. How do gases exert pressure?
- 831. What is pressure?
- 832. What is heat transfer?
- 833. What is thermal equilibrium?
- 834. Why is anomalous expansion of water important in nature?
- 835. What is anomalous expansion of water?
- 836. What is thermal expansion?
- 837. Why do different substances heat up at different rates?
- 838. What is specific heat capacity?
- 839. What is heat capacity?
- 840. What are examples of heterogeneous mixtures?
- 841. What are examples of homogeneous mixtures?
- 842. What is a colloid?
- 843. What is a suspension?
- 844. What are solute and solvent?
- 845. What is a solution?
- 846. What is a heterogeneous mixture?
- 847. What is a homogeneous mixture?
- 848. What is a mixture?
- 849. What is a pure substance?
- 850. What are the properties of BEC?
- 851. What are the properties of plasma?
- 852. Who discovered Bose–Einstein condensates?
- 853. What is Bose–Einstein Condensate (BEC)?
- 854. Where is plasma found in nature?
- 855. What is plasma?
- 856. Why do gases diffuse rapidly according to kinetic theory?
- 857. Why do solids have fixed shape according to kinetic theory?
- 858. Why do gases exert pressure on the walls of the container?
- 859. How is kinetic energy related to temperature?
- 860. What is the kinetic theory of matter?
- 861. What factors affect density?
- 862. How do you calculate density?
- 863. Why does ice float on water?
- 864. How does density vary in solids, liquids, and gases?
- 865. What is specific gravity?
- 866. What is density?
- 867. Why does temperature remain constant during change of state?
- 868. What is latent heat of vaporization?
- 869. What is latent heat of fusion?
- 870. What is latent heat?
- 871. How is boiling different from evaporation?
- 872. What is boiling point?
- 873. What is melting point?
- 874. How does pressure affect states of matter?
- 875. How does temperature affect states of matter?
- 876. What factors affect the change of state?
- 877. What is deposition?
- 878. What is sublimation?
- 879. What is condensation?
- 880. What is boiling?
- 881. What is evaporation?
- 882. What is freezing/solidification?
- 883. What is melting?
- 884. What is interconversion of states of matter?
- 885. What is meant by shape and volume in different states of matter?
- 886. Why does diffusion occur faster in gases than in liquids?
- 887. What is diffusion?
- 888. Why do gases expand to fill the entire container?
- 889. What is compressibility? Which state is most compressible?
- 890. How do molecules arrange themselves in gases?
- 891. How do molecules arrange themselves in liquids?
- 892. How do molecules arrange themselves in solids?
- 893. What are chemical properties of matter?
- 894. What are physical properties of matter?
- 895. What is meant by “properties of matter”?
- 896. What are the characteristics of gases?
- 897. What are the characteristics of liquids?
- 898. What are the characteristics of solids?
- 899. What is the difference between solids, liquids, and gases?
- 900. What are the three primary states of matter?