Why is hydrogen a light gas and iron is a heavy solid

How is a coefficient used to balance an equation

What will you change (the independent variable) in your test?

Is quartz considered a mineral or ore?

1. Choose the alkyl halide (s) from the following list of C6H13Br isomers that meet each criterion below.

Most of the elements of which region of the periodic table are located directly to the right of the metaloids? A. Metals B. Nonmetals C. Noble Gases

2. Seorang ibu perlu menyediakan satu hidangan kari daging dengan cepat untuk anaknya yang lapar. Langkah manakah yang berikut dapat membantu dia mencapai tujuan ini? (CL01, C2) A. Menggunakan periuk yang lebih besar B. Menambah banyak serbuk kari C.

Which of the following statements is not true? Question 4 options: When atoms have similar electronegativities, electrons are shared equally When electrons are shared equally, the molecule is called a nonpolar molecule.

Write the isotope symbol for two isotopes of the same element. What makes the isotopes different? How are they similar?

According to the periodic table, which element has an atomic number of 40? a. u b. ca c. zr d. np

3. Which word best fits with the Earth's day and night cycle a. Revolution b. Rotation C Orbit d. Axis